I think “long covid” is something that has existed for a long time, well not long covid specifically but long term side effects of colds and flu.

A few years before covid I got a terrible cold or flu. Name a symptom of the flu and I probably had it, it was hard to even get myself to the toilet.

But what was so unique is even after the aches, the cough, and sore throat etc symptoms disappeared I didn’t recover. I was exhausted. Even weeks later I’d fluctuate between days of being fine to the next barely able to get out of bed.

It took at least 3 months after traditional flu symptoms had finished till that started to taper off. And at least another 3 before I started feeling truly myself again.

To add another example to your great post.

And when there are exceptions, they are based on the type of good. Eg in Australia GST isn’t charged on fresh fruit and vegetables in a grocery store. It doesn’t matter whether an orange was grown in Australia or internationally it will be tax free.

Whereas with a tariff, a orange grown locally will be tax exempt whereas the imported one (from a tariff applied country) will.