[Rochus]

> Using Python for a large application is like building a nuclear reactor using Lego bricks

I like this comparison. Anyway, it's interesting to note that it took the author "many years of experience running large applications written in Python" to come to his conclusions. The advantages of static typing and the disadvantages of dynamic or duck typing are well known since decades. The problem is less Python as a language, but the fly-by-night decisions to just use it for anything. To stick with the example: what prevents people from using "Lego bricks" (or a high-temperature proof version thereof) to build a reactor? Sound engineering decisions and, most importantly, safety regulations.