> <i>Real-world work makes you rusty.</i><p>Always be working on <i>something greenfield,</i> if only to exercise the facilities of choosing among choices, intent-to-ship, and honing one's wash-rinse-repeat cycle.<p>Personal development tools need to be kept maintained as much as one's hobbyist workbench, instrument, and so on.<p>Having a blog, owning a server, and writing tools all contribute to keeping things sharp.