You've probably been in this kind of situation: You enter an antique shop and see an exquisite tapestry. The dealer says it was handmade and brought from the land of Timbuktu (or some exotic location). You pay a hefty price on the tapestry, but discover later that a small tag sewn on the fabric says "Made by machine in Canada". Bummer. Knowing the difference between handmade and machine-made is especially…