Depending on breed, management and environment, the domestic horse (including draft horses) today has a life expectancy of 25 to 35 years. It is uncommon, but a few animals live into their 40s and, occasionally, beyond. The oldest verifiable record was Old Billy, a 19th-century horse that lived to the age of 62.
TRUE. Validity is a necessary condition for being sound. 14. FALSE. A valid argument can have a true conclusion and false premises (see #11); and if an argument does not have all true premises, then it is not sound.
In other words, you need to try to understand where they're coming from. If you're having trouble accomplishing this task, try following these steps: 1  Jot down several good reasons why you support that particular side of the argument.  Look at the reasons you provided and try to argue with yourself.