Good article but I would quibble on the point about "time ≠ money". To me, one has a finite amout of time, that must be "spent" no matter what you do, the goal

Good article but I would quibble on the point about "time ≠ money". To me, one has a finite amout of time, that must be "spent" no matter what you do, the goal is to maximize the "trade" value for your time. With my job, I trade my time for money – which I can then turn around and trade money for someone else's time. With my hobbies, I trade my time for for skills/knowledge. When I'm relaxing, I'm trading for my own sanity. You can't really "waste" time; instead of you simply trade it for something of little or no value. In that sense, money is time... and time can be represented as money.