R 20-Yield Curve Strategies-

Why positive twist is a flattening and negative twist is a steepening. I mean, why this terminology? Why is negative twist not a flattening?

Clockwise vs. counterclockwise (or anticlockwise).

Or deasil vs. widdershins.

What is deasil and widdershins?

Look them up.

(Warning: you’ll feel really silly once you do.)