Knowing41

The coin has two faces
hence you go for a toss.

But the Toss has a decision error.
Actually you toss the coin and look down the coin and announce the topside of the coin as the final decision. 
You saw Tail, that is correct?
No, You look down after the toss and not look up but may look foolish to do the same. You just see the topside of the coin but actually you have to see the side which kisses the earth. We look down and see the coin side which also looks down and kissing the earth was the correct side. Hence what we practice may be called an error.

Why do we always see the frontside of the coin coz we feel for our convenience. We never know which side to look at it. Then which side to look at? 
It is the side which kisses the earth. But we do the reverse. The error is an error but we tend to follow a certain yardstick without knowing whether it is true or false. 

Finally,
Who knows which side to look coz we found two sides are equal hence looking at one side is foolish and which side to look is another foolish thing. 

Hence, 
Toss always carries an error of judgement.