Python and Ruby

[Paul Rubin]

Nobody <nobody at nowhere.com> writes:
> A better metric is whether using N features has O(N) complexity, or O(N^2)
> (where you have to understand how each feature relates to each other
> feature) or even O(2^N) (where you have to understand every possible
> combination of interactions).

M. Felleisen wrote a paper trying to formalize some metric on the
expressive power of programming languages.  I skimmed through it for
about a minute and wasn't convinced, but it apparently has gathered some
respect.  I want to read it more carefully sometime:

  http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.51.4656