Sometimes the best lessons in life are not the ones you learn in school.
A seemingly useless or time-saving trick can somehow become useful when the right moment comes along. Even if you aren't MacGuyver or James Bond, you could still benefit from picking up a talent or two -- besides learning the guitar or speaking Spanish.
[seealso slug=life-hacks/]
You never know when a random skill will come in handy. Being a savant definitely has its perks.