What are human thoughts but more complex combinations of the "chaotic excitations" to which the site refers? An unborn baby doesn't suddenly transform into a thinking being. It is a gradual process and it starts at conception.

__________________
"I am a Tory Anarchist. I should like every one to go about doing just as he pleased- short of altering any of the things to which I have grown accustomed." (Max Beerbohm)