When we told our guide that we didn’t want to go to all the tourist places, he took us instead to the places where they take tourists who say that they don’t want to go to tourist places. These places are, of course, full of tourists. Which is not to say that we weren’t tourists every bit as much as the others, but it does highlight the irony that everything you go to see is changed by the very action of going to see it, which is the sort of problem which physicists have been wrestling with for most of this century.

— Douglas Adams - Last Chance to See 💬 🗺