I'm not advocating a bad scientific study. I'm advocating a good one for detecting what might be another cause of it not working for monkeys other than 'duh! monkeys aren't mice!"

It's not about finding something inconclusive or incorrect. It's about finding all the ways you can make caloric restriction not cause extended lifespan in mice without harming them in some obvious ways that are hard to apply accidentally in research setting.

For example, maybe caloric restriction doesn't work if you feed mice badly inappropriate diet.