Wil, when are you coming to Portland, OR, for a book signing?

The article states that 1kg = 2.2lbs, which is only true in a 1-gee gravitational field. Kilograms are a unit of mass, and pounds are a unit of weight.

The English analog to kg is the slug. Pounds, of course, are analogous to newtons.

Interestingly, Google Calculator will incorrectly assert that 1kg = 2.2lbs. It should be 1kg = 2.2lbs/32fpss (feet per second squared), or about 0.069 slugs.