If you want to train a laboratoryrat to pull a crank to get a food pellet, the reflex will be scratched in deeper if the creature is rewarded with some regularity but not all the time.
The natural impulses that helped early humans find food and avoid predators are causing us to regress to a state no more sophisticated than a rat in a laboratory, he said.
他还说，帮助早期人类寻觅食物，躲避捕食者的自然本能正让我们朝实验室白鼠的简单状态不断退化。
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Today you feel like a laboratoryrat who has to struggle through a maze every time it wants a chunk of cheese.