"Most people just make the mistake that it should be simple to design simple things. In reality, the effort required to design something is inversely proportional to the simplicity of the result."

Sort of off-topic, but did Mr. Fielding mean to say either "inversely proportional to the complexity" or "proportional to the simplicity"? This quote implies that as effort increases, simplicity decreases, which seems out of spirit with the context of the quote.