2008.04.17

**Article of the Moment**

As reported here on Slashdot and here on BoingBoing, according to an informal poll 20% of scientists use 'cognitive enhancing' drugs. Makes me worry I've been missing out!

**Observation of the Moment**

Then, having identified the nature of geometric axioms, [Poincaré] turned to the question, is Euclidean geometry true or is Riemann geometry true?

He answered, The question has no meaning.

As well ask whether the metric system is true and the avoirdupois system is false; whether Cartesian coordinates are true and polar coordinates are false. One geometry cannot be more true than another; it can only be moreconvenient. Geometry is not true, it is advantageous.