Its much like writing code. Learning through blundering about. Anything useful that happens, happens only after enough blundering has.

Except segmentation faults and accidental rm -rf's haven't put me in a wheelchair or unable to function properly, yet.

Except programming errors HAVE killed people - read the Therac case report.

https://www.computer.org/csdl/magazine/co/2017/11/mco2017110...