Please, see these charts from Mother Jones on income inequality in America. It's not that the rich are getting richer, its that the super-rich are getting super-richer...and leaving the rest of us behind.
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But from this comes an incredibly insightful comment from my dad:
Let’s begin with energy efficiency. One of the most remarkable facts about the human brain is that it requires less energy (12 watts) than a light bulb. In other words, that loom of a trillion synapses, exchanging ions and neurotransmitters, costs less to run than a little incandescence. Compare that to Deep Blue: when the machine was operating at full speed, it was a fire hazard, and required specialized heat-dissipating equipment to keep it cool. Meanwhile, Kasparov barely broke a sweat.
The same lesson applies to Watson. I couldn’t find reliable information on its off-site energy consumption, but suffice to say it required many tens of thousands of times as much energy as all the human brains on stage combined. While this might not seem like a big deal, evolution long ago realized that we live in a world of scarce resources. Evolution was right. As computers become omnipresent in our lives — I’ve got one dissipating heat in my pocket right now — we’re going to need to figure out how to make them more efficient. Fortunately, we’ve got an ideal prototype locked inside our skull.
To support a human brain you can't just factor in the calories consumed. You have to factor in the costs in energy to grow the food, etc.Here's what Dad is driving at: in order to sustain Watson for an hour, you might need 50 kilowatts of power, to pull a random number out of the air. To sustain a Ken and Brad's brains for that same hour, you'd only need 24 watts of power.