Inventory- A two edged sword?

Inventory is as old as human. Inventory complications have been faced by every society, but it was not until the 20^th century that analytical techniques were to study them. The initial impetus, for analysis expectedly came from manufacturing sector. In theory, inventory is an area of organisational operation that is well developed. In practice, it is very backward. Inventories today have good-guy and a bad-guy image. There are many reasons that why we like to have inventories but there are also reasons why holding inventories is considered to be unwise. There arise a need to see how much inventory is needed with least cost. We often say “inventory is necessary evil” but how true it is?