This is a fascinating weekly topic for me :-) I grew up in days of DOS 3 and onward, so I am basically physically incapable of using whitespace in filenames. A

This is a fascinating weekly topic for me :-) I grew up in days of DOS 3 and onward, so I am basically physically incapable of using whitespace in filenames. And frequently I'll replace white spaces with underscores on files shared with me. Fascinatingly though (and sometimes irritatingly), several of my mentors have cautioned me to drop this habit as I get promoted. At management level, they all use white space and dots haphazardly, and they apparently perceive underscored filenames negatively. This goes up drastically at executive level.