trace: used for visualizing flow of program, extremely noisy and never on prod debug: low level flow of program, inputs/outputs info: what I want to see at ru

trace: used for visualizing flow of program, extremely noisy and never on prod debug: low level flow of program, inputs/outputs info: what I want to see at runtime in prod, high level flow of program, details about operation so I know what's going on if I want to look warn: things that may indicate errors or other unexpected situations to be aware of that may be relevant to problems elsewhere error: something serious or unexpected that probably indicates a defect.. issue that needs to be looked into... unhandled/unexpected state