Columnist: Banning performance enhancing drugs (PEDs) from sports will not stop their use.
Conclusion (So, should)
PEDs should be allowed, assuming they're administered under a doctor's care to make sure it's a safe dose.
Evidence
With a safe dose handled under a doctor's care, the health risks from PEDs disappear.
Intermediate Conclusion
Banning PEDs won't stop their use
Evidence
PEDs provide too big a competitive advantage and top athletes will do whatever it takes to gain a big competitive advantage.
Evaluate
A missing link assumption here would sound something like,
or to get from premise to intermediate conclusion,
What about objections? How could we accept the premises but argue that "we should not allow PEDs"?
We can't object based on health risks, because the author is saying they'd only take it under doctor's supervision, which would eliminate the health risks.
But what could be other negatives about allowing PEDs? If athletes are allowed to take them, and would gain an advantage by taking them, then aren't they going to all end up having to take them, lest they otherwise be at a disadvantage?
Would we as sports fans be happier or less happy with an NBA or an MLB where every player is on steroids? Would it send a negative message about drugs, to kids who look up to these athletes as role models?
Goal
Look for a missing link answer connecting , or for an answer ruling out an objection.
If an answer, when we negate it, allows us to argue that "banning PEDs would stop their use" or to argue that , that would weaken the argument.
If negating an answer turns the answer into a weakening objection, then it's correct.