But Brooks changed his mind about it because it was assumed that the project would use the flawed waterfall process. So if you're using the right process, you c

But Brooks changed his mind about it because it was assumed that the project would use the flawed waterfall process. So if you're using the right process, you can iterate and move back and forth between different stages (i.e. testing, specification design) easily, thus eliminating the need for re-writing from scratch.