How Do We Pay for It and Why Other Apes Can't?

"We're actually really terrible when it comes out of how many calories we spend to get food," he says. "Even though we have those narrows and axes and we're clever, right? We're smart, we're talking to them about where the food is ... It doesn't matter." But humans are amazing at getting a high rate of return by sharing their energy with other people who can't afford to dwell themselves on what they've found.