It's just what I heard on the Dutch news, but IIRC there are things you can do to make side effects less bad (I guess e.g. experiment with lower dosages), but d

It's just what I heard on the Dutch news, but IIRC there are things you can do to make side effects less bad (I guess e.g. experiment with lower dosages), but doing those things will delay the vaccine. Which of course wasn't desirable, so they opted for a higher certainty of having a working vaccines sooner over having fewer side effects. In the future, side effects could be less severe.