From Michael Hamilton
Nick Bostrom asks whether we live in a computer simulation (18 November, p 38). What would that run on, then? The class of programming languages called functional languages – and their close relative Lisp – often make use of a technique called “lazy evaluation”: they defer computing a result until it is actually needed.
Perhaps the developers of our simulation are using such a functional language, and the wave-particle duality is visible evidence of their choice of development tools.
Wellington, New Zealand
