But also a better way would be to ask the user to open a second tab (or another app) so that it's not the only tab/app.
Still beats remembering a unique shortcut.
If you are with someone who cannot know what you are doing, who has appeared suddenly, you are quickly closing what you're doing and, yes, you will be looking at a blank page without some sort of escape mechanism like this. And if it's sudden and unexpected, you might not have been anticipating needing to pop open some decoys.
This seems like a complete misunderstanding of the situation.
> If you have enough time to just go and open Solitaire, you have no need for an escape button.
You don't have enough time to complete that, you do that not to appear just staring at a blank screen. Activity of opening Solitaire is enough in itself.
> who cannot know what you are doing,
which is easier achieved when the browser is closed vs. when a browser is opened, since in the latter case it's easier to think about checking "previous" browser history
> This seems like a complete misunderstanding of the situation.
Indeed, so much so that this overengineered-but-underthought solution has none of the supposed benefits under the conditions people come up with to defend it
In almost all cases, it's not just so obvious that the experts in a field are so misguided. It's that there is complexity and depth that is not perceivable at a glance.
This is actually not true. Having a browser opened leads to the thought of "let's check the previous page/browser history" easier (since the browser is right there to remind you) than a situation of "oh, I've just logged in" or the activity of doing anything else leads to the thought of having to check a browser