Hence this article. No this isn't part of a riddle or bad joke. It's a distinction that has great importance to the acceptance of Linux in the corporate world. This acceptance is about much more than whether or not Linux has a good spreadsheet or whether one can do word processing, desktop publishing or image manipulation. These applications will rarely, if ever, be distributed or sold outside the walls of the corporation for which they were developed.
Technology is usually cheaper than people.
Hence a choice of development tools is driven more by familiarity, installed base and availability of programming talent than by considerations of pure technical merit. Even if they do offend the ideological or those with an overdeveloped worship of pure technical merit. Though new to Linux, I've been around Unix since Bell Labs Version 7 and on the Net since about 1979. Nope, not me. That's where procmail on my home Linux system will send them anyway.