First I assumed it was related to timber (though I'm squarely from a metric culture). I see the 6 and 4 as being equal and congruent, so I don't imagine one nu

First I assumed it was related to timber (though I'm squarely from a metric culture). I see the 6 and 4 as being equal and congruent, so I don't imagine one number as multiplier of a lot of some other thing or visually as groups of things. I guess my answer would be the dry mathematical 24. Maybe I'd be better at mathematics if I'd try to visualise things more... Your question reminds me of the little experiment Feynman did where he tried counting to a minute while reading, and how people can see and do even simple tasks differently in their head. Ways Of Thinking: http://www.bbc.co.uk/archive/feynman/ http://www.bbc.co.uk/archive/feynman/