And judging the relative popularity for less popular languages such as Common Lisp is even less precise if we base the research only on github and stackoverflow. So I would be very careful with this comparison of language popularity. Although it is better to have some chart that none :)
Yes, precisely. Still this is a very interesting research and you can see clusters of languages like the most popular ones. I just noticed that people often tend to look at a chart and jump to quick conclusions, so just wanted to add this "grain of salt" :)
