Surprise: Temperature Matters
I quietly assumed that temperature wasn't a significant impact. Boy did that turn out to be wrong.
Log
Engineering log.
How the work is actually going: what was tried, what broke, what got measured, and what's still open.
Keeping water and electronics separate
Water isn't evil, it's just patient and creative, and weirdly attracted to electronic components.
When the Line Is Gone
Why Tern exists: a missed dive on the bomber, what dead reckoning can and can't do, and how landmarks make this possible