Uneven Haircuts

Barbers strike me as a practical lot.  Which makes this pricing structure seem especially strange to me.

barber shop

I mean, isn’t a kid going to have less overall hair than an adult?  I understand that an adult head may have less coverage percentage-wise, but the larger head-radius more than makes up for the lower proportion of hair.  I’ve got to believe that the price-per-hair is considerably higher for a child than an adult under this pricing system.

Of course, I would not be so naive as to expect understandable pricing structures from hair stylists.

Related Posts

 

BBC Podcasts: A Brief History of Mathematics

This is a set of ten podcasts from the BBC titled “A Brief History of Mathematics“:

http://www.bbc.co.uk/podcasts/series/maths

Narrated by mathematician Marcus du Sautoy, these podcasts begin with Newton, Leibniz, and Calculus, and cover other great personalities in mathematics like Euler, Fourier, Ramanujan, Poincare, and, of course, Gauss.

Each podcast is about 15 minutes in length, and all 10 are freely available for download.

Math Photo: Windowsill Contours

I have an adjustable screen for my window, the kind you expand horizontally to fill up the windowsill.  It’s somewhat effective at keeping bugs out of the house.

When it’s not opened all the way up, the two layers of screen overlap in the middle.  Depending on the angle you are looking from, you can see some cool images.

At this angle, for example, I see a contour map of a function of several variables.

I wish I understood where the curves come from!

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