She may be onto something here...

AMY: Mommy, when are we going to buy new winter boots? I want to get some purple ones this year.

ME: It's too early to buy winter boots. The stores don't even sell them yet. We'll wait until it's cold and snowy, and then we'll go shopping for them.

AMY: That won't work AT ALL. If it's cold and snowing, we would need to put boots on before we could go shopping. And we couldn't do that because we wouldn't have the boots yet. We need to get the boots before the snow starts. So, shouldn't we go tomorrow?