https://www.youtube.com/watch?v=nbHOBvLlypY https://www.youtube.com/watch?v=PV89U-PNUNA

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"Standard estimates for indoor PETG longevity are 10–20+ years under normal conditions, with some sources giving a more conservative 5–10 years. A century is 5–10x beyond those estimates under passive conditions." Wow! Thanks for pointing this out. This is fascinating.

You could even get a binder, and then print the QR codes sheets as 'pages'. You could print these thin enough to do 1mm sheets. That means ~ 120 of these in a 5 inch binder. So, a 3 ring binder of 1mm sheets of 177x177 QR codes would hold about 346.2 KiB. You could store encryption keys in this way. You can probably push the density well past 177x177 even on a Mk4s pretty safely. I may try this later today.

There are woodworkers on YouTube who use CNC, some who use the best Festool stuff but nothing that moves on its own, and some who only use handtools. Where is the line at which woodworking is not their craft?

The idea was that the Prosper data set contained all of the information that a lending officer would have, but they also had user-submitted pictures. We wanted to see if there was value in the information conveyed in the pictures. For example, if they had a puppy or a child in the picture, did this increase the probability that the loan would get funded? That sort of thing. It was a very fun project!

Paper: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1343275

I try to remember that episode when building tech products. We all like solar. We all like trains. It doesn't mean that we need to have solar panels between the train tracks.

I think that although it could be cool, it seems like train right-of-ways is a particularly harsh environment for solar panels. There's dust, harsh vibrations, heavy cast iron components, and other things right next to a sensitive bit of electronics. It seems like it would be more economical to have a solar farm managed by the train company. This way the panels can be easily cleaned, angled properly, and maintained not in the proximity of giant rolling metal boxes.

I had a friend in Australia who ran cattle on his farm. Failing open would waste water, but failing closed would mean dead cattle (and hundreds of thousands in losses). It depends on the application.