Now that I have, ahem, explained my take on explanations, Uncertainty Wednesday can move on to examine what limits them. Again, as a reminder, the whole point here is that limits to explanations and to observations are what results in uncertainty (we will soon also talk about whether there is anything such as inherent randomness in underlying reality). The fundamental limit on explanations is the same thing that gives them power in the first place: they are abstractions, meaning they are more...