it drives me insane that good tracing profiler tools are basically confined to certain niche domains and/or are insanely expensive (or some weird cloud based shit). instrumenting programs (printf or otherwise) is dumb as hell when all desktop usermode (and even most embedded chips worth coding for) have the capability of instruction level trace. tools have sweet graphical timelines and stuff and it's killer.

basically, all programming should be writing requirements as a custom level for Shenzhen I/O