Mark Rober doesn't do any engineering himself, he's the CEO who claims credit for what other people do.
For example, he didn't create the glitter bomb, his most viewed video. That was done by Sean Hodgins (making-of video: https://www.youtube.com/watch?v=IpMxOmUcfOI). Sean's name was not mentioned at all in the glitter bomb video. Instead, Mark Rober claimed he built it by himself.
Ugh, that's disappointing. My son really likes Mark, we've been watching his videos and even got this Build Boxes things to build every month. Sean got 300K views and Mark Robers video 91M.
Mark claims he built it https://youtu.be/xoxhDk-hwuo?list=PLgeXOVaJo_gnexNopBzUKdl3Q..., he had the sketch done first and the CAD drawings, the he "hit up his buddy Sean, who is good with this type of small electronic stuff". So Mark claims Sean did just the electronics.
This was added afterwards after some outcry. It's annoying that YouTube doesn't notify whether the video was edited after the fact, like Reddit/Hacker News does.
That is sneaky. At least they decided to update the video. But overall it's pretty disappointing. Mark is playing this meek, super nice guy persona on the screen. It's just camera play acting to attract young viewers. Oh well, it's good to know. Thanks for mentioning it.
Which is basically a total rip-off of the Stuff Made Here version where the actual engineering process is the highlight, not Rober's shilling. https://www.youtube.com/watch?v=Gu_1S77XkiM
That video is linked literally in the first paragraph of the PDF.
The video also starts with him acknowledging the Stuff Made Here version, and the fact that the developer of that project said he wasn't totally satisfied with his solution.
For example, he didn't create the glitter bomb, his most viewed video. That was done by Sean Hodgins (making-of video: https://www.youtube.com/watch?v=IpMxOmUcfOI). Sean's name was not mentioned at all in the glitter bomb video. Instead, Mark Rober claimed he built it by himself.