As a follow up to the previous blog note, I found this blog note of Paul Buchheit very enlightening.
The Drake equation provides an estimation of the probability of extraterrestrial life existence. Note that XKCD has a joke about it here, the point being that attempting to quantify the probability is pushing the logic too far.
Christophe Meessen is a computer science engineer working in France.
Any suggestions to make DIS more useful ? Tell me by using the contact page.