4. Since when are oblate spheroids not “round”? Is “round” really a synonym for “shaped like a perfect sphere”? 5. One reason we might not see quantum effects

4. Since when are oblate spheroids not “round”? Is “round” really a synonym for “shaped like a perfect sphere”? 5. One reason we might not see quantum effects at a large scale is that they are small. Another reason might be that the effects are large, but we are entangled with the system we are observing.