Arithmetic, Population, and Energy

Dr. Albert Bartlett is emeritus Professor of Physics at the University of Colorado at Boulder, USA. He has given this lecture on “Arithmetic, Population, and Energy” over 1,500 times.

“The greatest shortcoming of the human race is our inability to understand the exponential function.”

A challenging statement. Having seen the lecture now I can understand why it has been so popular, and is so important. I came across it recently and felt it was worth sharing.

You can watch it on YouTube here as a series of bite-size 9 minute clips.

(After that you might like this unrelated take on applying risk management.)

The Italian Perl Workshop

Pisa Cathedral Wall.jpgI spent a very pleasant few days in Pisa, Italy, last week. I’d been invited to speak at the Fourth Italian Perl Workshop. The workshop was a great success. In fact calling it a “workshop” is selling it short. It’s more of a mini-conference:

“2 days of conference, 2 simultaneous tracks, more than 30 talks, 120 attendees, 20 sponsors and many international guests”

The whole event ran very smoothly thanks to a great team lead by Gianni Ceccarelli, Francesco Nitido, and Enrico Sorcinelli. I’ll echo the compliments of one attendee “Complimenti sinceri agli organizzatori! Bravissimi! Tutto perfetto!

I gave short talk on Gofer on the Thursday, and then two 40 minutes talks on Friday: Perl Myths, and Devel::NYTProf. I hope to upload screencasts and slides next week. The talks were all recorded on video so I imagine they’ll be uploaded at some point. I’ll add links here to them when they are.

The majority of the sessions were in Italian so, since my Italian is practically non-existant, I had plenty of time to work.

Or at least try to. The one disappointment of the trip for me was the apparent poor quality of the Italian internet. Using mtr I’d regularly see over 20% packet loss within and from my hotel room. Occasionally over 50%. It got much better at night, so I’d do more work then. At the conference venue the Italian academic network ( also regularly had over 20% packet loss at its link to the internet. All this was, of course, outside the control of the organisers.

The “corridoor track” at perl conferences is always good. I had a chance to talk to Rafel Garcia-Suarez (and meet his lovely wife and new baby son), Matt S Trout, Hakim Cassimally, Michel Rodriguez, Marcus Ramberg, and many others.

I had opted to take a very early fight so I’d have a day being a tourist in Pisa before the conference started. The weather was beautiful and I had a lovely time strolling though the streets of this ancient city.

Pisa Knights Square.jpg

I didn’t take my camera with me, but I did take my iPhone so I was able to capture a few snaps as I strolled around and climbed the tower. (Yes, it really does lean in a disconcerting “it must be about to fall down” way. All the more dramatic when you’re up close and can appreciate the massive scale of the tower.)

Pisa View over Cathedral.jpg