Rating: 

Truth is, this is a review of the title.

All purpose programming languages, such as Java and Python are extremely popular. Most computer programmers, apparently from the title, Wilson included, do not think expertise in specialized programming languages are worth bragging about or worth talking about at all.

THAT IS GROUPTHINK, there I said it. A bit like C++ programmers being snobbish about VB. But for the specific subject of user interfaces, VB(and Delphi) are superb.

(By far the the most famous specialized programming language is SQL).

You cannot give a complete talk about data crunching , my specialty , without talking about tools and languages specific to the realm of data crunching.

And that means: SQL (especially SQL SELECT), and , frankly, Vilno, which is a free download at www.my.opera.com/datahelper.
Also SAS, SPSS, and S/S-PLUS/R can be considered

Sometimes all-purpose tools are the best , sometimes specialized tools are, it depends on the particular situation.

Robert