I have a big catch with "what is sensible caution?" that a lot of people don't understand until it's explained - compound failure. I try to set my instincts up such that they're okay if a whole bunch of other stuff is going wrong so that I'm suitably cautious when I'm tired, fatigued, have dyspraxia, sensory processing and autism symptoms peaking etc etc. Which is a lot more cautious than I need on an average day!