Flexible circuits are interesting and worthy of discussion. Really, the whole process here is fascinating to me. There's been a lot of progress in flex circuit

Flexible circuits are interesting and worthy of discussion. Really, the whole process here is fascinating to me. There's been a lot of progress in flex circuits over this recent decade. None of it is electrically or computationally new. It's 1980s tech from a computation perspective. But mechanically?? Being able to weave circuits seamlessly into clothes, tapestry, and such is pretty cool. If only for the cosplay / costume designers but that's still a pretty / beautifully kind of display (especially with a few fiber optics to move lights around). One of the interesting electro-mechanical issues is that flex circuits are necessarily thin, making grounding / return currents exceptionally consistent. On the downside however, solid planes / ground fills are bad for flexibility, so you apparently need to make a ground-grid instead of ground-fill. Very interesting tech overall. Even if it's applications are quite small right now.