Q: Here is a goal: To permanently attach lengths of PVC pipe together

How would you accomplish this goal?

A: You can glue them into place

Q: Here is a goal: How do you sand a piece of wood?

How would you accomplish this goal?

A: You lay the wood down on a surface then take a piece of sandpaper and rub it on the wood back and forth.

Q: Here is a goal: How can I make my smile look more natural in a photo?

How would you accomplish this goal?

A:
Instead of smiling try laughing, it will come across as less forced.