[ifyoubuildit]

> Crucially, the mRNA vaccines have a very similar effect on the body to previous vaccines. The fundamental mechanism is the same: stimulate an immune response to a particular pathogen without actually giving someone the pathogen.

If I started a new car company, and it put out it's first mass market vehicle, would you accept me saying "yeah, it's a car, it works like every other car out there, it has 4 wheels and drives down the road", would you assume it has the same reliability and safety record as an equivalent Honda or Toyota?

> Also, the way we know that it won't have adverse effects in the future is that the vaccine doesn't persist in your system. If it's going to harm you, the harm will be in the short term. It can't just pop up again in 6 months.

If someone was diagnosed with cancer (or an autoimmune issue, or dementia, etc) today, when did that diagnosis become inevitable? Yesterday? Last year? How do we know that the harm will manifest itself immediately?

[smt88]

> If I started a new car company, and it put out it's first mass market vehicle, would you accept me saying "yeah, it's a car, it works like every other car out there, it has 4 wheels and drives down the road", would you assume it has the same reliability and safety record as an equivalent Honda or Toyota?

This analogy doesn't make sense.

It's my first mass-market vehicle, but it's already been tested more than 7 billion times. You as the driver are not a crash-test dummy.

Even if you were, your alternative is not "don't drive a car" or "drive a safer car". Your alternative is to get into a car that we know is dangerous (i.e. being at risk of contracting Covid).

> If someone was diagnosed with cancer (or an autoimmune issue, or dementia, etc) today, when did that diagnosis become inevitable? Yesterday? Last year? How do we know that the harm will manifest itself immediately?

Because the vaccine can't continue to affect the person when it's out of their system. The vaccine is entirely gone within a couple of months, and only the immune system's "learning" remains.

And while you're asking these questions about the vaccine, why not ask them about the disease itself? We aren't speculating about the disease, either. We know that it causes long-term issues in a lot of people, potentially including brain and heart damage.

[ifyoubuildit]

> This analogy doesn't make sense.

Do you truly think this doesn't apply at all? I see a lot of people say "it's a vaccine, we know how vaccines work", just like I'm saying "it's a car, we know how cars work".

In reality, implementation details matter. A Tesla isn't a Ford (and especially wasn't for the first GA model). You can predict some things, like maybe the body will rust in similar places. But what does a gas tank tell you about how a battery will hold up over time?

> Because the vaccine can't continue to affect the person when it's out of their system. The vaccine is entirely gone within a couple of months, and only the immune system's "learning" remains.

This is a prediction that comes from our experience with other makes/models of vaccines, and one that will hopefully come true. In the case of a never infected/never vaccinated person, I'd put my money on that prediction based on what I've heard about covid. For a person who has already recovered, leaning on that prediction feels unnecessarily risky, especially when as you say, we don't fully understand the long term risks of covid either. Why add more risk on top of that?