Chiming in that this applies to controls engineering as well (think PLCs). Start from the IO, cross-reference that through the rest to get a feel of chains of c

Chiming in that this applies to controls engineering as well (think PLCs). Start from the IO, cross-reference that through the rest to get a feel of chains of causality and how it all works. Oftentimes it's critical to go from zero to applying changes as quickly as possible when unfamiliar (and poorly documented!) machinery is down.