... we learn by tinkering. When "a lot of us grew up," ... that tinkering was done "on motorcycle engines, lawn-mower engines, automobiles, radios, and so on." But digital technologies enable a different kind of tinkering — with abstract ideas though in concrete form... Yet the freedom to tinker with these objects is not guaranteed. ... that freedom is increasingly highly contested. The law and, increasingly, technology interfere with a freedom that technology, and curiosity, would otherwise ensure. - Lawrence Lessig, Free Culture