My brain tends to overlook the big BIG buttons. Like when I was on vacation last month and they had a different cashier system and I couldn’t find the “pay with credit card” button. I tried every other button on the screen, until I gave up and asked another person. They looked at me in absolute disbelief an touched the BIG button that took up about half of the screen. To me it just came into existence at this point of time, it just wasn’t there seconds before the other person touched it. I’m really careful about opening doors though, and I surely would have seen “emergency” written on the door.