How do you suppose you predict the probability someone will do the same thing you did within a day? I suppose you would need to know the total populations, and according to the C.I.A Fact Book it is 6,379,157,361 (July 2004 est.), which is good enough for me. And I suppose you would need to know how many seconds someone could initiate a certain task (we are setting the intitial time it takes to start a task to = 1 second). So it takes one second to start task and there are 86400 seconds in a day. That means that there is 86,400 possible chances for someone to do something. so a single person has 1/86,400 chance of doing something. Now you need to incorporate the population minus you. So it would be 6,379,157,360 people have a 1/86,400 chance of doing something. This is where I don't know what to do next. Would you need to know that there are a total of 5.511591959 x 10^14 chances that someone on the earth is doing something, but how to you calculate something? A task I mean. *this may not make sense, because I just edited it and it didn't make much sense to me :grumpy: but I think you may get what I am getting at anyways.