.
For example, not being overweight is good for you. The existence of people who survive famine because they started out obese doesn't disprove that.
For instance, if you have to get to work at 5am, are you better off waking up earlier to eat breakfast? In this case, the cost of lost sleep may be greater than the benefit of breakfast.
The NYT article points out that many of the studies that claim breakfast is good may be flawed. If that's true, then we are likely overestimating the benefit of breakfast. And that means that in many cases where we thought
perceived_benefit(breakfast) > cost(breakfast)
it could actually be that
real_benefit(breakfast) < cost(breakfast)
Can you apply the same logic there?