Gregory's Server@TechConnectify I wonder the same, but I've started to feel like it's a composite skill. You need to learn things like puzzle solving and maybe enjoying puzzles, learning how to break down a problem into its parts, as generic things. Some of these can be instilled early-on, and some more direct. I think largely though just giving people problems and the like that involve critical thinking skills of any topic are a start, and building that sense of "I can do".
Either that or it's as simple as "more parents need to buy Legos for their kids".
@KayOhtie @TechConnectify confidence is key and believing in the supremacy of cause and effect. Also having access to trouble shooting tools. In software a lot of times it is strace and tcpdump and trace and so on. For hardware for me a lot of time it is having spare parts so I can swap in and out. I understand real engineers can use oscilloscopes and circuit tracing and signal analyzers etc. even for stuff like the turtle tank smells bad from time to time, an experimental method works.