Cordwainer "cobbler" have often been considered not interchangeable, according to a tradition in Britain that restricted cobblers to repairing shoes. In this usage, a "cordwainer" is someone who makes new shoes using new leather, where as a "cobbler" is someone who repairs shoes. Medieval cordovan leather was used for the highest quality shoes, but cordwainers also used domestically produced leathers and were not solely producers of luxury footwear. In the historic London guild system, the cobblers and cordwainers were separate guilds, and the cobblers were forbidden from working in new leather. Historically, cobblers also made shoes, but only using old leather
Two wrongs make a right red herring, or an attempt to change or distract from the issue. For example: Even if President Roberts lied in his Congressional testimony, this does not establish a precedent that makes it acceptable for President Williams to do so as well. (At best, it means Williams is "no worse than" Roberts.) By invoking the fallacy, the contested issue of lying is ignored. The "tu quoque" fallacy is a specific type of "two wrongs make a right". Accusing another of not practicing what they preach, while appropriate in some situations, does not in itself invalidate an action or statement that is