Originally Posted by Drake
Yes, the philosophy applies, but don't take it so literally; try to understand the underlying meaning instead. There are annotated versions of these books if you have trouble understanding them. The concepts not only apply to martial applications but to business etc.
As Drake says, it applies elsewhere. I'd go as far as to say it applies to all aspects of life, as does the Art of War. Don't take it in too literal a sense or much of what it can teack will be lost..