Everything is gradation

Last year, one of my friends told me that

 "Things are gradation." 

That word still sticks in my mind with a large impression.

Since I started learning at iBS, I have noticed that things are not black or white. Too complicated.
Especially when we debate, what we thought was right ended up negative view. Vice versa. We think that one experience was success or failure, but actually there is no fully success or fully failure. Even success have negative points and failure have positive points too after all. Now I think I know what he meant.

 Even people are gradation.
 We can't be distinguished in 2(men or women) or 4 ways(LGBT). Because we squeeze us in it, there are people suffer from not fitting in. But if we think it simple as we are gradation, anybody can fit in anyplace.