Learning cooking is not about guessing the functionality of your kitchen appliances. It's about understanding how ingredients can be combined.

Likewise, guessing the third argument of the "ellipse" function isn't "learning programming". It's simply a barrier to learning.

In live programming environments We see code on the left and a result on the right, but it's the steps in between which matter most.

It is easy to be wise once all is understood.

[...] but in then exposing the weakest link in an argument and persisting until he broke through to new vistas.

An arid definition of symmetry in mathematics is a situation where change produces no change. For example, a circle is symmetric under rotation.

Labour government, Chancellor of the Exchequer Stafford Cripps imposed a huge tax on tobacco. Peter Higgs' father Tom Higgs, whom Peter described as a staunch Tory, stated, “I’m not going to contribute to a load of socialists!” and never smoked again.