System Why Is "system Integration" Made Out To Be Difficult, Justifying Modifications To A Contract ?

Why is "system integration" made out to be difficult, justifying modifications to a contract ? - system

I suspect the recent book "sub-class Collins Story: Steel, Spies and Spin"
mentioned it.

But system integration is not difficult for themselves.

Subsystem, each supplier in a specially adapted version of the entire system are integrated.

Special software tools there to help you "merge" the two versions of a component or a module or a subsystem of the total.

This process is repeated until all the embedded sub-systems "are.

He, subject to certain amendments to the contract, does not mean that the original contract was canceled. Doh!