Question: what is your favorite scientific technique?

Camille Parsons answered on 20 Jun 2018:

I am a statistician, which is a type of mathematician. This means my favourite scientific technique would be a type of maths. Probably regression, such as linear regression. This is a technique that is used when we want to look at the relationship between two things (such as a person’s height and their bone size), and we use linear regression to compare the data for each of these things. Is this something you have heard about/learnt at school? What is your favourite scientific technique?