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Re:If you are going to launch a startup, how many friends wo... by dangrsmind on Monday February 26, 2007 @10:29AM (#1210)
This one is probably related to the well known property of human short term memory which states that we can remember about 7 plus or minus one things. This is the reason that phone numbers are seven digits for example.

Re:If you are going to launch a startup, how many friends wo... by aristus on Monday February 26, 2007 @12:00PM (#1230)
Err, no and no. That was a hypothesis from the 50's that has since been invalidated, and many (most?) places in the world do not have 7-digit phone numbers. Memory is "chunky". For instance, you can easily remember phone numbers in your same area code even though they probably have 10 or 11 digits.