My company uses ArcGIS and has a project and data file naming standards in place and (for the most part) followed. Something that has always bothered me about he naming standards is that it mandates starting all project and data file names with the project number - an eight digit number. I've always held the belief that naming GIS files starting with numbers is a bad thing, and have had (especially with GRIDS) processes fail because of the file name.
I'm looking to amend the corporate standards to drop the project number requirement, however I cannot find much in the way of documentation on why "numbers as a first character" in filename is a bad thing. Can anyone point me in the right direction as far as resources to support this argument?