The thermoelectric array required almost nothing from him now beyond a daily inspection — clearing dust from its radiating panel, confirming the regulator circuit hadn't drifted out of calibration overnight, logging the slow, steady climb of stored charge. It was, in its own quiet way, the least demanding project he'd undertaken since the crash, which left him with something he hadn't expected to have in any abundance out here: time.

He spent it on the drill itself, because a power source with nothing to drive was only half a solution, and he intended to have the second half ready the moment the array's charge crossed the threshold GAIA had calculated. Idle time, he'd decided early on, was a luxury this planet didn't actually offer him even when it pretended to.

The gear transmission was the piece that worried him most. He'd sketched three different configurations over the preceding days, each one a compromise between the torque he needed to bite through unmelted bedrock and the structural integrity of components fabricated from metal never designed for this kind of sustained mechanical stress. He built the most promising configuration first, assembling a compact housing from salvaged instrument casings, fitting gears he'd cut and filed by hand from flat stock scavenged off the pod's interior paneling.

Cutting gear teeth by hand, without proper machining tools, was an exercise in patience that tested even his considerable reserves of it. Each tooth had to be filed individually against a template he'd scratched into a scrap of metal using measurements calculated from the transmission ratio he needed, and any tooth cut even slightly out of profile risked uneven load distribution that could propagate into exactly the kind of failure he was trying to avoid. He worked through two full sets of ruined attempts before producing a gear he judged acceptable, each ruined attempt logged and set aside for potential reuse as raw material for something else, because nothing here was ever fully waste, only temporarily unassigned to a purpose. It was a philosophy that had crept into nearly every part of how he now thought, not just about metal and water, but about the accumulated weight of every mistake he'd made before ever setting foot on this planet.

The first full-load stress test failed within ninety seconds.

He'd rigged a manual crank to simulate drilling resistance, applying force gradually while GAIA monitored strain across the assembly, and at roughly sixty percent of projected operating load, three teeth along the primary drive gear sheared clean off with a sound that made him flinch even through the suit's dampened audio pickup — a sharp, metallic crack followed by the grinding scrape of a gear now missing a chunk of itself trying and failing to mesh properly with its neighbor.

The sound stayed with him longer than the actual damage did, an unpleasant reminder of exactly how much force this system would eventually need to withstand, sustained not for the ninety seconds of a test but for hours at a stretch, day after day, forty meters into rock that had no particular interest in cooperating with his timeline. He crouched over the ruined assembly for several minutes, letting his pulse settle before touching anything, unwilling to let frustration rush him into a diagnosis he hadn't actually earned yet through careful observation. The desert around him, indifferent as always, offered no comment on the setback beyond the same steady wind it offered every hour of every day.

Arthur shut the mechanism down immediately and sat with the ruined gear in his palm, turning it over to examine the fracture surface with the same clinical attention he gave everything that failed.

"GAIA, assessment."

"Fracture pattern consistent with material fatigue rather than acute overload. The salvaged stock used for gear fabrication was likely already stressed by the original crash impact prior to your use of it. Recommend either sourcing unstressed material or reinforcing the gear profile to distribute load across a broader tooth surface."

Unstressed material was, at this point, essentially fictional. Everything on this planet that wasn't native silicate had already survived one violent event to get here — the crash that had stranded him, and before that, whatever ancient catastrophe had turned an entire world to glass. Reinforcement, then — thicker teeth, a broader profile, even if it cost efficiency and added weight to a system that would eventually need to run for days without failure.

He redesigned the gear that afternoon, widening the tooth profile by nearly forty percent, sacrificing some theoretical torque efficiency for a margin of safety he judged, after considerable calculation, to be worth the trade. Cutting the replacement by hand took the better part of a day, his palms blistering fresh beneath calluses that had only just begun forming from the previous week's labor.

He broke the work into short, disciplined intervals, filing for twenty minutes at a stretch before forcing himself to rest his hands and check his suit's failing seal, a rhythm that felt almost luxurious compared to the desperate, uninterrupted labor of his first days here. There was something to be said, he was slowly discovering, for a crisis that unfolded over weeks rather than hours — it left room for a kind of care he hadn't been able to afford at the very beginning, when every decision had been made under the shadow of a forty-eight-hour water budget ticking down toward zero.

The heat that afternoon was punishing even by the Glass Wastes' considerable standards, and twice he retreated to the dome's thin shade simply to let his suit's overtaxed cooling system catch up before it tripped a thermal warning he didn't have the luxury of ignoring. He used those pauses to check on the moss, now spread well beyond its original scattering of pinprick growths into something he could, without exaggerating, call a small green mat covering perhaps a third of the dome's floor. It was, he thought each time he looked at it, a strange kind of colleague — silent, undemanding, and entirely dependent on him getting every other part of this right.

He tested the reinforced gear that night, unwilling to wait for morning once the fabrication was finished, running the same manual crank test at the same simulated load. It held through the first sixty seconds, past the point of the previous failure, long enough that he allowed himself a flicker of premature satisfaction — and then, at roughly eighty percent of projected load, a different component failed entirely: a support bracket he hadn't reinforced alongside the gear itself, sheared at a weld point and sent a fragment of hot, stressed metal snapping loose across the workspace with enough force that it struck the ground less than half a meter from where GAIA's unit sat monitoring the test.

Arthur froze for a full second, adrenaline flooding a system already exhausted from a full day's labor, staring at the scorch mark the fragment had left in the silicate beside GAIA's housing.

"GAIA, report any damage."

"No damage sustained. Proximity was within margin of concern, however. Recommend revising test protocol to increase separation distance between operator, equipment, and monitoring unit during high-load trials."

"Noted," Arthur said, voice tighter than he intended, and spent a long moment simply breathing before he trusted his hands enough to pick up the fragment and examine what had actually failed. The scorch mark in the silicate beside GAIA's housing stayed in his peripheral vision for the rest of the night's work, an unwelcome reminder of margins he had, apparently, cut closer than he'd realized.

It was, in hindsight, an obvious oversight — he'd reinforced the gear itself without accounting for how the additional load, once the gear held, would transfer directly into the bracket supporting it. A cascading weakness, the kind that revealed itself only once the first failure point had been solved, which was, he supposed, simply the nature of complex systems: fixing one problem often did nothing but expose the next one hiding behind it.

He thought, not for the first time since the crash, that the observation applied to considerably more than mechanical engineering, and that he was, perhaps, uniquely poorly positioned to appreciate the irony of that fact from anywhere other than the inside of a stress fracture in his own life. He'd spent years believing that if he simply solved the immediate, visible problem in front of him — the current project deadline, the current data set, the current crisis at hand — the underlying structure would hold. It rarely had. Something else had always sheared loose eventually, in a different place, under a different kind of load, and he had rarely stopped to ask himself whether the pattern of failures pointed at something more fundamental than bad luck.

He rebuilt the bracket that evening by lamplight, working slower now, checking his own assumptions at each step rather than trusting the confidence that had led him into the previous evening's near miss. It was tedious, unglamorous work, made harder by hands still trembling faintly with the aftershock of adrenaline, but he found the deliberate slowness itself oddly calming — a kind of penance, perhaps, though he wouldn't have used that word aloud even to himself.

He changed his approach after that, less out of any single decision than a gradual accumulation of small ones. Rather than running full-load tests to failure, hoping each design survived, he began incrementing load in small, deliberate steps, testing each component's response at twenty percent, then forty, then sixty, pausing between each increment to inspect for stress signs invisible to the naked eye but sometimes audible as a faint, almost inaudible change in the mechanism's working pitch. It was slower. It cost him an extra day he hadn't budgeted for. It also, he suspected, would cost him considerably less than another near-miss with a piece of metal moving fast enough to take out an eye, or worse.

The new protocol demanded a kind of attentiveness that the old one hadn't — he found himself listening to the mechanism the way he might once have listened to a patient during a physical exam, alert for anything subtly wrong beneath an overall impression of normal function. At thirty percent load, the housing hummed at a certain pitch. At forty, that pitch shifted almost imperceptibly, and he learned, over the course of several repeated trials, exactly how much of a shift indicated healthy load-bearing and how much indicated a component beginning to protest under stress it hadn't been designed to handle. It was not knowledge he could have gained from a manual. It had to be earned, incrementally, the same way everything else out here seemed to demand.

He caught himself, at one point mid-test, holding his breath without noticing he'd started, and forced a slow exhale, aware that his own tension was doing nothing useful for a mechanism that responded only to physics and not at all to his anxiety about its outcome. Old habit, he supposed — the same instinct that had once made him hover over greenhouse humidity readings as though watching them more intently might somehow influence the number.

He found himself thinking, somewhere in the middle of that second, more careful day of testing, of a professor he'd worked under early in his career — not in any romantic capacity, simply an old mentor from his graduate years, a woman named Dr. Okonkwo who had run the soil mechanics lab with a discipline that had, at the time, struck him as almost excessive. She'd caught him once running a compaction test at full load straight out of the gate, impatient to see results, and had made him restart the entire series incrementally, step by step, while explaining — with the particular patience of someone who had clearly given this same lecture many times before — that impatience wasn't really about wanting the answer faster. It was about resenting the pace the problem actually required, and trying to substitute your own preferred rhythm for the one the material demanded.

"The soil doesn't care that you're in a hurry," she'd told him, not unkindly. "Neither does the gear. Neither, for what it's worth, does most of what actually matters."

He hadn't thought about that lecture in years, filed away alongside a hundred other formative moments from a career that had, in retrospect, spent a great deal of energy teaching him exactly the kind of patience that was currently keeping him alive on a planet three professors and one lifetime removed from that lab. He wondered, testing a gear assembly at forty percent load with the same deliberate restraint Dr. Okonkwo had once forced onto him, whether the lesson had ever fully applied to anything beyond soil and machinery. Whether he had ever actually let a person set the pace of anything, rather than simply enduring their attempts to slow him down until he could return to his own preferred rhythm alone.

He remembered, with a clarity that surprised him, the specific texture of her disapproval that day — not anger, not even real frustration, just a patient, almost amused correction, as though she'd seen a hundred students make the exact same mistake and had long since stopped finding it worth more than a raised eyebrow. She had retired, as far as he knew, several years before his own departure for Veridia Prime, and he had no way of knowing, out here, whether she was even still alive to be thought of at all. It struck him as a strange kind of grief, mourning in advance the possibility that someone who had shaped him this thoroughly might already be gone from a world he no longer had any way of checking in on.

It was an uncomfortable question to sit with, mostly because he suspected he already knew the answer, and the answer did not flatter the version of himself he'd spent years constructing. He had been patient with soil, with data, with machinery that couldn't demand anything of him beyond correct technique. He had been considerably less patient with anyone who required him to slow down for reasons that couldn't be reduced to a load-bearing calculation.

He didn't resolve the thought. He rarely resolved any of them fully, and by now he'd stopped expecting himself to. But he let it sit a little longer than usual, turning a test gear over in his blistered hands, and found himself wondering — not for the first time this week, and with a clarity that surprised him — whether some future version of himself might actually manage to extend a stranger's pace the same patience he'd always so easily extended a piece of machinery.

It was a strange kind of aspiration to have, alone on a planet with no candidate anywhere in sight to test it against, and he was self-aware enough to recognize the slight absurdity of rehearsing a virtue for an audience that didn't yet exist. But rehearsal, he reasoned, was rarely wasted, whatever its eventual audience turned out to be. He had spent years rehearsing competence for machinery and soil samples, and it had, eventually, kept him alive through a crash landing and two separate storms. Perhaps rehearsing a different kind of patience, even without a person yet to receive it, was simply the next discipline worth building — one more system, tended quietly and without an audience, on the chance that it might someday matter as much as any of the others.

By the third day of incremental testing, punctuated by two more minor adjustments and one further short pause to repair a fraying suit seam, the reinforced gear assembly, bracket redesign included, passed a full-load simulation without incident. Arthur ran it twice more to be certain, watching GAIA's strain readouts hold steady well within tolerance both times, and allowed himself, finally, to consider the mechanical half of the problem solved.

"GAIA, current charge status on the array."

"Sixty-one percent of projected requirement, on schedule for completion within three to four additional days, assuming no adverse weather." GAIA paused, then added, in the same flat register it used for everything: "Weather modeling for the coming week indicates no significant storm activity, though confidence in extended forecasts remains limited given available atmospheric sensors."

Three to four days for the power. The mechanism already proven. For the first time since he'd started sketching drill designs on a salvaged data slate, the actual moment of breaking ground felt less like an abstraction and more like a date circled on a calendar he hadn't realized he'd started keeping.

He spent the remainder of the evening on smaller refinements — smoothing a rough weld here, double-checking a fastener there — the kind of work that no longer changed the outcome meaningfully but that he found himself doing anyway, partly out of genuine diligence and partly, he suspected, because his hands had grown accustomed to staying busy and resisted the idea of stopping simply because the major obstacles had cleared. He logged the day's progress in his primary file with his usual precision, and, before closing the log entirely, opened the personal file beside it once more.

He didn't write anything lengthy this time. Just a single line, dated, honest in the plain way only a document no one would ever read allowed him to be: *Building something that might actually work. Wish there were someone here to be nervous about it with me.* He read it back once, didn't delete it, and closed the log for the night, letting the array outside continue its slow, patient work under a sky already deepening toward the violent cold of full dark, indifferent as ever to whether anyone was watching it succeed.

GAIA Protocol — Current Readouts Biomass Index: 0.7% Oxygen density: not measurable Air humidity: 0.4% Power system: Thermoelectric array at 61% target charge — drilling mechanism validated, standing by

The reinforced gear assembly sat, finally still, on the workbench beside him as the sky began its rapid slide toward dark. He ran one last visual check over the welds, the tooth profile, the bracket that had nearly cost him a piece of his own equipment two nights prior, and found nothing further to correct. Whatever came next, at least this piece of it was ready.