The dimensioning of DNA was an immediate turn-off for me. A common biochemistry demo is to show how long and macroscopically visible a chromosome can be. Saying DNA is 3.5 nm tall (long?) flies in the face of what is a pretty interesting and notable experience for a lot of people.

It essentially starts the whole project with a weird take on "How long is a piece of string?"

> In theory, you could create a polymer of infinite length (or height).

Works pretty well in practice too.