Me explaining to my wife why I'm reading the wikipedia page of navier stokes equations instead of vacuuming the garage
(I need to 3d print a dust cyclone seperator for my shop vac because I want to save money on bags, so I need to write a CFD simulator to optimize it)
Carl Jung believed life truly begins at 40, viewing the first four decades as "research"—a preparatory phase focused on building an ego, establishing a career, and meeting societal expectations. The second half of life, starting around 40, is for inward exploration, authenticity, and fulfilling one’s true self (individuation) rather than pursuing external validation.
Genuinely a better question than most people realize.
Apollo 11 left a 2-foot wide panel of mirrors on the lunar surface in 1969. No power source, no wiring, no maintenance. Scientists have been shooting lasers at it from New Mexico ever since. The beam travels 239,000 miles, bounces off the mirrors, and returns in 2.5 seconds. That round trip is how we know the moon is drifting away from Earth at 3.8 centimeters per year. So yes, in a literal sense, they were checking if it would still be there.
The seismometers are the part that gets wild. Apollo 12 deliberately crashed its lunar module into the surface at 6,048 km/h. Scientists expected a brief shudder. The moon vibrated for over 55 minutes. On Earth, seismic waves from an equivalent impact die in seconds. Nobody had predicted this. So NASA did it again. Apollo 13 dropped its S-IVB rocket stage from orbit. Hit with the force of 11.5 tons of TNT. The vibrations lasted nearly three and a half hours.
The reason is water, or the lack of it. Earth's interior is damp. Moisture in rock acts like a sponge, absorbing seismic energy. The moon is bone dry, cool, and rigid. Shockwaves have nothing to absorb them. They just bounce back and forth through solid stone until the rock itself stops vibrating. Scientists described it as the moon ringing like a bell.
The seismometers ran for almost 8 years and detected over 13,000 seismic events. Turns out the moon has four types of quakes: deep ones caused by Earth's gravitational pull, shallow ones from the crust shrinking as the interior cools, thermal ones when sunrise thaws the frozen surface, and impacts from meteorites. In 2023, Caltech reanalyzed old Apollo 17 data and found a fifth type: the lunar lander itself creaking and popping every morning as the sun heated it. Every five to six minutes, for five to seven hours straight.
They went up to prove the moon was once part of Earth, measure how fast it's leaving, and figure out what's happening inside a world with no atmosphere, no water, and no tectonic plates. "Checking if it was still there" is honestly closer to the truth than most people's actual answer.
I work on my notes app like 20 hours a week. This is what I’ve shipped since December
- Live Editing Voice Mode — Experimental, but amazing. Press the space bar.
- Reminders that understand context — When you mention a date in a note, Grug now sorts it into: Reminders that stay visible until they’re checked off, Events show up on the day they happen, and Simple mentions don’t clutter the top of the page.
- Email Agents — Grug can assist through email, Telegram, and in-app chat, Which opens up some genuinely useful ways to interact with your notes without always being at your desk. Schedule emails or email your agent anytime.
- Meeting Notes — with multispeaker transcription and more reliable audio capture.
- Custom Tasks — Summarize meeting transcriptions or do any custom chat request.
- Better chat tools — Grug Chat can now do web research, maps/place lookup, and read a URL directly when you paste one in.
- Lists — Any prompt can now be a list type, ie proper table-style lists with inline editing, sorting, filtering, and references between items. Much like a database in other apps. Work in progress, but promising for kan ban style functionality.
- Better note management — Change the date or location of any block.
- CLI — There’s now a command line interface for developers.
- Pomodoro timers — Add a time estimate to a line and track time right inside your notes, just end any line with a time like 'my task 5m'.
Reminder that simplicity becomes even more important in a world where ai lets you create infinite complexity. When everyone else aims to be galaxy brain, be grug.