00:18 mediaim: https://www.bugsnag.com/blog/bug-day-race-condition-therac-25/ race condition and overflow bugs, pdp-11 had devices and processor already working in parallel, some realtime os was used that shared a variable, and gui did not respond to mods nor did the variable register it anymore hence. Heh i got it yesterday delivered to my phone, likely all universities know that case, as it is presented in the safety lessons as worst example.