I agree with you on that point, yet I'm making my own. Analytical people are usually aware of politeness but take somewhat longer to realise that advice, instruction and offers to assist can be far more of a significant social slight than merely being curt. Those who are familiar with analytical types can see that they mean well and are just making nerdy faux pas. There are some, however, who will take offence - because the exact same words could be used by less nerdy person as deliberate one upmanship.