Lots of things have happened in the last 300 years, not the least of which seems to be a reduction in the speed of light. I feel that this sort of research needs to be encouraged as we need to know if constants are really constant. It is not enough to just look at time and the speed of light, though. Could a factor in Cook's discovery of the right-hand side of Australia within this time period be that distance had changed and he had less far to sail? The beauty of variable constants is, of course, that they allow you to calculate everything in a tidy way. You could even prove, for example, that the world is only 6000 years old. And we need many more scientific papers by Lambert Dolphin.