I have always preferred hoodies over hats and scarves because they are easier and more effective.
And to me t-shirts are also easier and more comfortable than dress shirts. I am from California so maybe that has something to do with it.
I feel like it doesn't serve us any more and the younger generation is getting lost in the toxic sauce and we've just become the same as the suits but with way less professionalism but that's probably a romanticized notion of what corporacy is based on my own experiences running early software from Apple when it still kind of was a shirt and tie corporacy (before the black turtleneck became the standard)
Anyway, you'll probably defend your right to wear a t-shirt to the death while claiming 'what you wear doesn't matter' so ask yourself whether what you wear actually does matter?
Now, I generally say, sales calls need 1 suit, 1 geek.
However it's also way off the mark because it doesn't treat the professional dress from a technologist standpoint but rather a socio-cultural one and doesn't go into the history of the shirt and tie (notice I didn't say suit and tie) as a communication medium
There's enough information here for a whole volume but whatever it's worth humans require signals to communicate and in the absence of something definite they'll use anything at hand
The traditional professional dress deals with social communication concerns we're no longer even aware of let alone leveraging to advantage and it's a pity to watch a whole generation of would-be professionals on a level the world has never seen in its billion year history lose the thread as it were and bring their shabby hand me downs to the arena when they could stand on the side of tradition and button up like their ancestors in the arts and sciences did for centuries before them
