When we were kids, we used this many times to protect ourself "Believe me mom, i had nothing to do with the empty chocolate jar" some time to hide our innocence, some time for some other specific reasons, but the meaning never changed unlike our intentions.
We always know the gravity of the impact the word can make, but sometime hardly understand the effect of it and it is this time that we lose the belief of others on us. although we may gain some.
People have there own beliefs to follow, all to live life but one belief is common "no one belief the believes of others", why..because we are too strong( or week) to leave ours and adopt or acknowledge others. This is the reason of riots, quarrels, borders and killings.
We believe in GOD, fate, destiny or anything else, but whatever it may be, it is the driving force for ourself, a support to reach to the top and a thing to blame. But, it is always us who are responsible for what ever acts we do, be it good or bad.
Its interesting how a same word can be a reason of bonds in relationships, and at a same time, can cause hatred amongst many. But its up to us where we want to use that, the meaning is a gift,rather then an excuse, which can be used many times, but should be used with caution because when we say it, others feelings are attached to what we say after it.