Aleins

[Ianofsmeg16]

even accepting all of your numerical assumptions for argument's sake, your conclusion is only as strong as your data. 9 planets is not a very strong sample base.

Well, if it's more or less, the point of that post was to show people that, with the amount of stars, solar systems and galaxies out there, the probability that there would be life on others worlds in close to 100%
I leave with a quote from monty python...you'd better hope there's intelligent life somewhere out there, cos there's bugger all down here on earth!