Presumably full length of career is ~40 years. Presumably “mid” is ~half, so 20YOE? There is a claim that SV culture is biased against older people so this migh

Presumably full length of career is ~40 years. Presumably “mid” is ~half, so 20YOE? There is a claim that SV culture is biased against older people so this might cut effective max age to... idk, 50? So mid career is then ~10-15 YOE?