Possible and impossible.

 These two words certainly seem to go together, well, but of course

the question arises, How do we sort them out ?

Well, every since the oldest man in space arrived there, I guess the

question of distinguishing the possible from the impossible 

could have become somewhat more difficult.  Actually there

has always been an oldest man in space, even if you go back

to before there were " men in space " ....

But back to sorting the possible from the impossible, we

have long had a profession which is mostly about the possible

and the impossible and distinguish those. They are generally

called " engineers " ... 

In order to " properly " sort them, you need to collect as many

possible things - as you can imagine - and then collect all

the impossible things you can imagine.   And then you have to

put them all in a bag or container, and then pull them out, and

decide at that moment, whether it's impossible or not.

My guess is, you'll get it wrong a lot.