About cirosantilli


Goodbye, WordPress

WordPress is really great. But when you are a programmer, nothing beats Git + Markdown + YAML metadata for a blog 🙂

My professional home page is: http://www.cirosantilli.com and I am collecting beautiful things at: https://github.com/cirosantilli/art

May you continue to serve Millions of non programmers as well as you have served me, WordPress.



Arecibo message


Shot at the “How to communicate with aliens” problem.

Minimum light response time: 50k years.

Neat techniques used:

– message is 23 x 79 (both primes), meaning that there are only two ways to make it into a rectangle. Using the wrong direction makes it clearly jumbled.

– human height encoded relative to wavelength of message

– solar system simplified representation. Drawing of human stands on top of earth representation.