Typo (2): error rate

The other thing about typos is how few we actually make relative to the attention we pay to them.

A single spelling or grammar mistake in a thousand words leaps off the page – is embarrassing – but makes no difference to our understanding.

We pay errors far more attention than they deserve as signals of the quality of a piece of writing – and in most contexts a 0.1% error rate is considered excellent anyway.

Polish is important – but not as a substitute for workmanship.

I'd love to hear your thoughts and recommended resources...