If you immerse yourself in something long enough, you will amass a big collection of souvenirs. Gearheads acquire tools, for example. They have a hierarchy of tools, too. A gearhead might let you ...

If you immerse yourself in something long enough, you will amass a big collection of souvenirs. Gearheads acquire tools, for example. They have a hierarchy of tools, too. A gearhead might let you ...