I’m sure you’ll post a reply that explains some outlier reason for a smartphone: what if I’m in rural Bangladesh and there’s no central square? What if….
But think how people got through these difficulties before smartphones. A lot more experimentation and reaching out to locals. This is why portable language phrase books used to be so popular when traveling.
Not every city has a central square, not everything you want to see might be within reach of one, not all restaurants are there, and of course all restaurants there can be tourist traps.
I don't need to think about how people struggled with things that are easy to today besides for the fun/novelty of it. While we're at it, exchanging money, carrying around and paying in cash suck. It was slightly less bad because i could look up the locations of ATMs of banks that don't charge you an extra fee for being a tourist on the spot.
> If the food turns out to be bad because you did not read online reviews, so what? Is your trip spoiled or did you just make a memory about shitty food in a Sri Lankan square
Considering how bad "bad" can get, that memory can involve a trip to the hospital ( food poisoning, parasites, etc.).
Thieves target people who are distracted so they can run by and grab a wallet before you see them coming. Scammers and sales people target people who look lost.
When you take the time to learn the things you want to do in advance and where they are you can walk alert, tall, and confident without your head buried in a phone during precious vacation time. This body language wards off many predators be they human or animal.
As for experimenting, it depends on where you're travelling. I wouldn't want to experiment in a third world country without reading online comments and reviews.