These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fridge Logic: If the idea of a Counter-Earth made sense, it wouldn't be wholly out of the realm of possibilty for the environment to look like own. But why would Terrans speak English? Why would their written language be exactly the same? Why would they have identical technology such as Plymouth Station Wagons?