Could I ask for physical analogies or metaphors for recursion?

Question

I am suddenly in a recursive language class (sml) and recursion is not yet physically sensible for me. I\'m thinking about the way a floor of square tiles is sometimes a mo

Answer 1

Take fractals as being recursive: the same pattern get applied each time, yet each figure differs from another.

As natural phenomena with fractal features, Wikipedia presents:

• Moutain ranges
• Frost crystals
• DNA
• and, even, proteins.