It feels good to be part of a movement for positive change. It seems all of a sudden that the end is nigh for single-use plastic bags.
As we make steps towards giving up our 1.6 billion-a-year habit, I'm now remembering to get the reusable bags out of the boot before I do the grocery shopping.
Which suggests a truth about social change: It's easier for most of us to do it when heaps of people are doing it.
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Safety in numbers, our tendency towards conservativeness as a defence against having to change our ways ― whatever the reason, most of us, most of the time, are reluctant to go out on a limb.
The leaders of social change, motivated by knowledge and a strong moral feeling about an issue, are needed to cajole, convince and inspire. There are probably people in New Zealand who haven't used plastic bags for decades who are right now rolling their eyes at the rest of us.