I'm not sure that's correct. To become useful for science, you also need to put in a lot of work to correct for bias, etc. Having a plural number of anecdotes a

I'm not sure that's correct. To become useful for science, you also need to put in a lot of work to correct for bias, etc. Having a plural number of anecdotes all with sample bias is not necessarily data and any attempt to create a correlation will run into problems.