Because if your mind tries to convince you you're incapable of something and you believe it, then like those two toddlers, you'll begin to feel helpless and you'll stop trying too soon, or you won't even try at all.
因为如果你的头脑告诉你 你不能做成什么事 而你相信了的话， 你就会像那前两个小孩似的， 开始感到无助 然后你很快就放弃了， 甚至都不去试一下。