[logiclion]

Thanks for the question. The entire comment is kind of defensive and impolite, but I'll focus on what you asked. In my opinion, approaching it like the parent did as an individual making a statement that can be disagreeing is polite to me. However, your question is asking me to define a polite way to introduce and acknowledge implicit bias into a conversation that is meant to be used in the same way as above, and I can't. Using the idea of implicit bias as a means for an accusation of prejudice and 'outdated' opinions by appealing to various forms of groups that the parent could OR could not be identifying with as 'your' own opinion as an 'individual' is a hammer. Its powerful and sometimes is needed, but again its not a screwdriver :)

I interpreted the parents comment as a joke more about the engineer not looking like a TV star than the others not looking like an engineer by the way...

So to close this comment, CANT ENGINEERS LOOK LIKE TV STARS TOO?? to which I will respond and say 'not always'. Maybe that's a way to respond politely to implicit bias...