[tonyb]

Everything I cook is temperature + feel. For example on pork once it hits 200-205 (depending on what temp I'm cooking at, the higher the cook temp the higher the finish temp) the thermapen becomes an expensive toothpick to feel for tenderness. Color is used as a element when I might move on to the next step but not at all for when it is done - for example I wrap pork once it hits 160 + has the color I want.

It has to be a repeatable processes, especially if you are doing it commercially and you need to train other people. Temperature is a measurable thing vs look or feel which is subjective.

For some things accuracy is extra important, one or two degrees won't make or break a pork but but can greatly impact something like steak.