It’s really useful. The past two weeks, i didn’t have any cash on me, just my credit card, because i can pay with that at the local supermarket, and i hardly go anywhere else to shop. Except for the exceptions. For example, yesterday i would’ve needed just 200 yen to do my laundry, and of course i didn’t have the coins. Today, i wanted to buy fried potatoes for my late lunch, but of course i couldn’t pay with my card there either.

And here i was thinking just a few minutes before that, that credit card is just another kind of money, no different from the notes or the coins used nowadays. It doesn’t matter anymore what form the money is in, since the money we use, itself has virtually no value. Try to sell a piece of paper like that, however elaborately designed against copying, in a society that doesn’t recognize its issuer, and probably you’ll find it has no value. I guess it’ll be just a matter of time until there will be some kind of next step in the evolution of money, where i use money as a means to measure material value. I wonder what it will be like. Globally accepted, immaterial, simple. I’m waiting…