Or #1. I work on critical infrastructure at FAANG and it's frightening how complex things are. The folks who built the systems and knew them inside-out have mo

Or #1. I work on critical infrastructure at FAANG and it's frightening how complex things are. The folks who built the systems and knew them inside-out have mostly moved on, and the newbies, like me, don't fully understand how the abstractions leak, what changes cause what side effects etc.