In the first instance, with a little help, people believe they are doing the right thing, after some more careful consideration and facts becoming known they reconsider and may find it is not in their best interest to go further. Flight or fight syndrome, it's never too late to reconsider your position on things.
Jab 1 - for me
Jab 2 - for those around me
Jab 3 - it didn't help getting 1 & 2, what do I do!
