I think this is actually pretty foreign in a world where jeans & tshirt is seen as the default.

If you look at how everyone dresses though, you’ll find a clear flow from grunts (tshirts) to managers (shirts & slacks) to leadership (full suit).

Everyone is conditioned to that, so just by dressing differently people now perceive you as something different.

Of course there are exceptions, but it’s generic enough that I think it applies everywhere to some extend.

lol, yeah. Partly because at my workplace jeans & t-shirts are common, and repping the employer is seen by some as "being a kiss-ass".

I'm sure that was literally the only thing mentioned in the book...