I have learnt a very valuable lesson, when in a meeting and everyone is moaning about who is actually going to do the work you have talked about, and all the 'auld hands' keep their heads down and avoid eye contact, never fill the awkward silence with
"That's piss easy I could knock a script up in an afternoon to do that". Undoubtedly I could, but what the auld hands knew that I didn't, was that the data you would be using to feed your script would not be nicely formatted CSV files as I had imagined, but instead several clusters of unrelated, not useful, inaccurate and bloody stupid data.