But there are qualitative changes that aren't captured by this -- street lights are brighter and whiter now than they were in the 1990s for example, and those were brighter than oil lamps before them.
Note: that's a more accessible podcast/write-up of the paper I linked in my comment as [1]. If people want the denser in (in both good ways and bad) version, look up there.
But there are qualitative changes that aren't captured by this -- street lights are brighter and whiter now than they were in the 1990s for example, and those were brighter than oil lamps before them.