I'm suspicious of acronyms. Think about it: is it a coincidence that the five most important principles in programming just happen to line up to form the word "SOLID"?

I'm suspicious of acronyms because there's always someone, somewhere, making compromises to make them work. Whether it is by omitting equally (or more) important elements because they don't fit the acronym; whether less important elements are included to make it work; or whether names are changed, their meaning obfuscated, so that they'd fit perfectly.

Acronyms are of course a great choice to market your ideas because, well, people tend to remember them. SOLID is the perfect example.