16 December 2010

Thanksgiving sales

Thanksgiving in the US is always on a Thursday. The day after (known as black Friday)  is apparently the biggest shopping day of the year and marks the beginning of the Christmas shopping period. I was in Bellevue, Washington and noticed a lot of advertizing on the streets: people holding signs for sales, waving them up and down, as cars drove buy, to attract consumers' attention. The one below is particularly interesting: a young girl, dressed in military outfit, advertizing guns and ammo (ammunition).

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T H E B O T T O M L I N E

What measure theory is about

It's about counting, but when things get too large.
Put otherwise, it's about addition of positive numbers, but when these numbers are far too many.

The principle of dynamic programming

max_{x,y} [f(x) + g(x,y)] = max_x [f(x) + max_y g(x,y)]

The bottom line

Nuestras horas son minutos cuando esperamos saber y siglos cuando sabemos lo que se puede aprender.
(Our hours are minutes when we wait to learn and centuries when we know what is to be learnt.) --António Machado

Αγεωμέτρητος μηδείς εισίτω.
(Those who do not know geometry may not enter.) --Plato

Sapere Aude! Habe Muth, dich deines eigenen Verstandes zu bedienen!
(Dare to know! Have courage to use your own reason!) --Kant