Thank you Dave, and Vincent, for an amazing video and interesting bits of kit. I was able to see the video in HD so I was amazed at the tiny size of some of those probes. I'd hate to be the one who wires up that probe card. I wonder how you would go about testing the probe card to ensure that the wiring was correct.
That multi-layer PCB isn't that impressive to me. A few years back I did some consulting for an elecctronics company that had their own PCB manufacturing division. I was shown a board in the shape of an H (or capital I) they had made that had 100 (one hundred) layers. I don't remember its exact dimension. It was around 3" side to side, and around 1/4" to 1/2" thick, AFAICR. The whole assembly formed a transformer. Now that was an impressive assembly.