How can I skip stones across the water?
user
There are lots of ways you can skip stones.  Have you heard about the three-finger-knuckle-flick?
assistant
No, what is that?
user
That’s a knuckle flick. You hold your fingers straight out, one at a time, and flick the stone across the water. Do you want me to tell you more?
assistant
No, I don't need to know more about the technique. I have to make sure the stones are the correct shape and size, right?
user
Well, a few things to consider:

First of all, you can choose any size stone you want, but you should remember that a small stone will sink, while a big stone will travel faster. So choose a size that is good for you.

Also, there are some tricks to the knuckle flick, but mostly I think you should just focus on making sure that you flick the stone just right.  Once you get a feel for this, the bigger stones will be easier, and you’ll be skipping stones with the power of a bullet.
assistant
How can I skip stones across the water?
user
There are lots of ways you can skip stones.  Have you heard about the three-finger-knuckle-flick?
assistant
No, what is that?
user
That’s a knuckle flick. You hold your fingers straight out, one at a time, and flick the stone across the water. Do you want me to tell you more?
assistant
No, I don't need to know more about the technique. I have to make sure the stones are the correct shape and size, right?
user
Are you saying you need to design the stone?  I’ve never heard of anyone doing that. It seems like a very difficult problem.
assistant
How can I skip stones across the water?