The first evidence is a direct evidence, but limited only to my direct channel, which is my personal experience.
The second evidence is an indirect evidence. If average APL programmers can write and read programs at the same speed (character count/minute) as average programmers for other languages, Java for instance, then APL programmer will possess significant advantage in finishing similar programming tasks, given that the typical code size is often a few orders smaller. Why such advantage is not embraced and see APL programmers everywhere? My hypothesis is avg APL prgrammers program at much slower speed.
Like any science, I cannot say my hypothesis is conclusive. I am open (eager) to hear and examine any other evidences (and change my hypothesis if necessary).
The second evidence is an indirect evidence. If average APL programmers can write and read programs at the same speed (character count/minute) as average programmers for other languages, Java for instance, then APL programmer will possess significant advantage in finishing similar programming tasks, given that the typical code size is often a few orders smaller. Why such advantage is not embraced and see APL programmers everywhere? My hypothesis is avg APL prgrammers program at much slower speed.
Like any science, I cannot say my hypothesis is conclusive. I am open (eager) to hear and examine any other evidences (and change my hypothesis if necessary).