I think it is because people are used to read from left to right ( normally ), but when they read upside down with text or numbers, they still read from left to right, and that is why reading upside down, in my opinion, affects our fist thoughts without hesitating. Tell me if I am wrong or not!
As long as it is in all capitals, the word "SWIMS" can be read upside down.
They both read the same when rotated 180 degrees.
It is not easy. However, you can train yourself to do it. The ability must be learned through a lot of practice and patience. People who read a lot have a better ability to recognize words even if they are upside down and backwards.
1961 can be read the same way right side up and upside down.
The speciality of 1961 is that it can be read upside down!
Yes, it is possible to read a book upside down, but it may be more challenging and slower to do so since our brains are wired to read in a specific orientation. Some people may find it uncomfortable or difficult to read upside down for an extended period of time.
ohio
SWIMS
DEED. Some people think that NOON works, but the N's would be wrong.
So that it can be read by drivers on the road who are looking in their mirrors.
1913