previously, https://news.ycombinator.com/item?id=46918282

also, https://news.ycombinator.com/item?id=46913747

The Show HN a few days ago, https://news.ycombinator.com/item?id=46758648

Trying to build a robot is the way to start the robotics hobby. Reading about robots, studying physics etc. are different hobbies and fine in their own right, but not a robotics hobby.

There is no wrong way to do a hobby. Good luck.

Just making the world better is the simplest thing that might work.

highest return-on-efforts ways to make the world a better place for as many people as possible?

“Return” is for your ego. So is “as many people as possible.” Good luck.

Exactly this. It compounds. I like how someone said go vegan, but really "eat less beef" works just as well.

I get Github's 404 page when I click the link.

Over longer time periods that's true. Over spans of several days, Many repostings of the same personal project is not consistent with the spirit of HN because self-promotion is not the primary intended use and is not intellectually curious.

The original Show HN, https://news.ycombinator.com/item?id=44633725

some recent comments, https://news.ycombinator.com/item?id=46848756

Manual typewriter?