I like a lot this small code example http://math.stackexchange.com/questions/726369/when-does-the-newton-raphson-method-fail/1766666#1766666 http://math.stacke

I like a lot this small code example http://math.stackexchange.com/questions/726369/when-does-the-newton-raphson-method-fail/1766666#1766666 http://math.stackexchange.com/questions/726369/when-does-the... It results in an interactive diagram of the Newton Raphson method to search for a zero of a function. The user explores with mouse how the algorithm is working. It is only a few lines of Smalltalk code over the Dr. Geo interface. IMHO, the Smalltalk message system brings well balanced expressiveness on the resulting code.