One of my most popular articles was "Piracy and the Four Currencies
[https://www.fortressofdoors.com/2012/02/piracy-and-four-currencies.html]", which explains the
economics of piracy in terms of four "psychological currencies": money-dollars
($M), time-dollars ($T), pain-in-the-butt dollars ($P) and integrity-dollars
($I). Purchases don't