I won't be so outright dismissive about what Tasja posted about professors...But the fact is she took the opinion of two different professors, suggesting something fishy. Moreover the response of professors depends on the status of querist also (as they see). If a child or a layman or a non technical staff, asks some complex question, then professors would be very affectionate and his response may not be very technical or very accurate. Imagine a professor telling some one about trillionth of second when that someone is not able to figure out that Carl Lewis lost the 100 m dub by a fraction of second. Professor would be very guarded if the question comes from a scholar or a peer.