Trickier

I think things will get trickier as time goes on.

I think that things will get trickier as time goes on.

So let's see how you did on your first brain-strengthening exercise. What country, what mountain range, and — even trickier — what alpine pass did we mention just a minute or so ago? Don't remember, even though we specifically asked you to? How about this? Can you multiply the number 17 by two, three, four — all the way to ten without pausing or writing anything down? No can do? Well, good friend, you are an excellent candidate for a daily regimen of mental jumping jacks.

It’s trickier than it seems at first.