Today in our lab at NYU I walked by as three grad students were talking. The topic was being able to pay for things with your phone.
One student was telling the other two “China is way ahead of us on this. For years now you can pay for everything with your phone.”
Another student replied “I’m sure we will get there.”
I couldn’t resist piping in. “The reason I like paper money is that nobody needs to know who I am.”
For a moment the three students just stared at me, trying to understand why that would be a thing.
And then I saw a dawn of realization in their eyes. It was because they were talking to an old guy!