I ended up deleting my comment because 1) I didn't think it was adding anything and 2) I was already mentally poking holes in my argument but to your point. Weed killer in your example is doing what it's intended to do. Glyphosate isn't being sold as a decongestant or a nutritional supplement. Normal people cant observe vaccines working, but you can observe them NOT working. Theres alot of pharmaceuticals that you cant really observe working but are shown to work to a "Statstical significance" in studies with large populations (aka a weak signal).

With that said, there are lots of pharmaceuticals whose intended treatment changes based on the side effects noticed in initial rounds of testing.. In other words they design it for one purpose doesn't actually work but has a side effect, then they brainstorm to how they can use that side effect to their benefit.

I think the basis of this post was that you have to have a HUGE amount of trust in the Pharmaceutical companies/FDA/Doctors that these products work as they say they will and covid has absolutely shattered that trust.

Edit: For all those curious, my previous comment was that my first check is actually observing if a product is working or not rather that relying on statistical probability of an improvement.

I ended up deleting my comment because 1) I didn't think it was adding anything and 2) I was already mentally poking holes in my argument but to your point. Weed killer in your example is doing what it's intended to do. Glyphosate isn't being sold as a decongestant or a nutritional supplement. Normal people cant observe vaccines working, but you can observe them NOT working. Theres alot of pharmaceuticals that you cant really observe working but are shown to work to a "Statstical significance" in studies with large populations (aka a weak signal).

With that said, there are lots of pharmaceuticals whose intended treatment changes based on the side effects noticed in initial rounds of testing.. In other words they design it for one purpose doesn't actually work but has a side effect, then they brainstorm to how they can use that side effect to their benefit.

I think the basis of this post was that you have to have a HUGE amount of trust in the Pharmaceutical companies/FDA/Doctors that these products work as they say they will and covid has absolutely shattered that trust.