I think they just need more than two sources since there's more to program language popularity than they can two sources can show. Stack overflow naturally bia

I think they just need more than two sources since there's more to program language popularity than they can two sources can show. Stack overflow naturally biases towards languages with worse documentation and those which cater to newer programmers. For example, it favors Visual Basic and disfavors Golang, resulting in VB having a rank of 19, with Golang ranking at 22 despite golang being far more popular on github. Factors which this survey doesn't account for include what languages new programmers are being taught in, how much code is actually running in production, what type of developers companies are wanting to hire, and what those companies are writing in behind closed doors.