You started without it. You should be able to finish without it.
A fifty-year-old replay.
Those collisions are going to be hard to manufacture.
Timing is important in investing as well as comedy.
How much did you understand the rules?
We aren't in the math department any more.
Making things more convenient for specific scenarios.
I wonder how much of this I got right.
Declaring the thing whose definition you are looking for.
You can give something a name without saying what it is.