Idiom-related quibble: a "double edged sword" typically refers to something that is both an asset and a liability. Higher production costs and more built-in de

Idiom-related quibble: a "double edged sword" typically refers to something that is both an asset and a liability. Higher production costs and more built-in defects are two liabilities. A suitable alternative in this case would be a "double whammy". More on that idiom: http://english.stackexchange.com/a/132063 http://english.stackexchange.com/a/132063