Limits

Cells in our body have

Contact inhibition

(A limit beyond which 

a single cell won't grow.)

So they are normal and 

Could function properly. 

. 

As they loose contact inhibition

They become cancerous

And becomes harmful to its own body. 

. 

As in a society

Each person should know there limits

For having healthy relations with everyone

. 

As one would cross the limits 

The relations would degrade

And ultimately lead to illness in society.