This may be a bit pedantic, but: it's not that what we know changes, per se.
We weren't mistaken in thinking that plastic doesn't degrade.
We mean: as of now, we have no possible method to make plastic degrade. It _may be_ we will develop such a method in the future, but it's reckless to rely on the _possibility_ of a future discovery.
This may be a bit pedantic, but: it's not that what we know changes, per se. We weren't mistaken in thinking that plastic doesn't degrade.
We mean: as of now, we have no possible method to make plastic degrade. It _may be_ we will develop such a method in the future, but it's reckless to rely on the _possibility_ of a future discovery.