Conjunction Claims

In the Epstein handbook, it talks about a very important concept called conjunction claims. It is basically two claims used together, however there is a catch both claims need to be accurate in order to be considered a conjunction claim. Thus, if one claim is false then the whole statement is false. For example, a pencil writes in lead and ink. We know that pencils are used to write, but they do not use ink. If they use ink they would be a pen. Thus, the claim is incorrect due to its reasoning. While the example I gave is very obvious it can be a problem for people who use two claims. People need to make sure both claims are correct in order for it to be called a conjunction claim and get there argument across. I find myself often writing double claims with one of them being incorrect. It takes away the credibility of article and could make the argument itself a problem.