"And it frequently requires complex thinking. In fixing motorcycles you come up with several imagined trains of cause and effect for manifest symptoms, and you judge their likelihood before tearing anything down. This imagining relies on a mental library that you develop. An internal combustion engine can work in any number of ways, and different manufacturers have tried different approaches. Each has its own proclivities for failure. You also develop a library of sounds and smells and feels. For example, the backfire of a too-lean fuel mixture is subtly different from an ignition backfire."
"The Case for Working With Your Hands" - Matthew B. Crawford, NY Times, 2009.
An extract from his excellent book Shop Class as Soulcraft.
"I’ve found that children are the best audience. They are enthusiastic, impulsive, generous, and pleased by simple joys. They laugh easily at the ridiculous and are willing to believe the absurd. Children are not ironic, disillusioned, or indifferent but hopeful, open-minded, and openhearted, with an inquisitive yearning for pictures and stories. To a child, every day is a great invention."
— Eric Rohmann (via abcofreading)