An abstraction layer makes itself most visible when it fails. Avoiding failure requires better or less abstraction layers. In many cases I don't trust others to

An abstraction layer makes itself most visible when it fails. Avoiding failure requires better or less abstraction layers. In many cases I don't trust others to build correct abstraction layers, good UI libraries, reliable GPU drivers that don't corrupt memory when sleeping the system, etc. (Filesystems and virtual memory are largely reliable in the common case, though it's still common to avoid filesystems and allocations and swapping in real-time code, and schedulers cause grief when they cause media payback to stutter when I'm running compiler jobs.) Often I trust myself to work with less abstraction layers, more than I trust others to build better ones.