I think having some powerful modern tools with you when you travel out
to 3rd world countries is good to do.  Just keep in mind, it could be
worth your life if the wrong person over there knows of it.  So be
careful with that.

But also -- there's a lot of knowhow about simple and primitive
treatments to common problems.  What do you know of salt water
poultices?  How do you use mercurochrome to treat infection?  Etc etc,
there are books out about primitive medicine, and if I were in your
shoes, I'd find them and read them.  Sometimes you don't need
sophistication.  Sometimes simple works *well enough*.  The point is,
to know enough to know the difference, to be your own doctor and you
might then just be the best one around.

Cheers -- Martha Adams