It looks like the author's audience is applied sciences (MATLAB crowd). Therefore, the author's comparison of Python vs Java is more applicable than Python vs

It looks like the author's audience is applied sciences (MATLAB crowd). Therefore, the author's comparison of Python vs Java is more applicable than Python vs Haskell. This may be due to more "batteries included" in Java and Python ecosystems for scientific computing. The author had 30 existing Java programs to look at for bugs. I can't tell if his/her dataset search would have found 30 student-written Haskell programs.