Hacker... space. It's a "space"... where people "hack" on their projects. Seems pretty straightforward. The only part that throws people off is the definition of the term "hack," though these days surely we're beyond thinking that's just people who break into computers?

Hackerspaces generally have machine shops, but that's not all they are. They also have lounges, computer labs, biotech labs, kitchens, and whatever else their respective members are interested in.

Definitely not! The place is open to visitors most every evening. Any of the events on the calendar are open-house events: http://atxhackerspace.org/wiki/Calendar

No, there is definitely welding, as well as dozens of other things that were not mentioned in the video.

I got one that mentioned it on the packaging.

It also plays "MP4" videos, which are *NOT* mpeg4, but hey, at least it can play videos, right? And that's useful with a .5 inch screen, right?

A non-recursive Python version which uses Warnsdorf's heuristic:
http://github.com/pib/scripts/tree/master/knight.py

It's faster than the one in TFA as well, though it has no backtracking, so it won't find some solutions once you get bigger than 76x76, but at least it doesn't overflow the stack.

It also will tell you whether it found an open, closed, or incomplete path.