If I'm a chemist, and I write an algorithm to do something related to chemistry, that algorithm does not "automatically" know everything I know about chemistry.
I think there's a case to be made that data contains bias, ie. previous arrests, encoding the bias of the past arresting officer, but the algorithms don't contain bias. Unless you could explain how logistic regression is biased.
If I'm a chemist, and I write an algorithm to do something related to chemistry, that algorithm does not "automatically" know everything I know about chemistry.
Bias works the same way.