Question

explain and justify the statement ," development of one person maybe the destruction for the other "

Answer 1

development of one  may be destructive for others but not in all  the cases.
example:[it is a practicle example]
if the cost price is less than the selling price then it would be profit for the owner and loss for the customer.
and vice versa that is:
if the cost price is greater than the selling price then it would be profit for the customer and loss for the owner