In a nutshell, with an automatic transmission the brain is the engine computer. It determines many different things like torque, rpm, load, speed etc. so it can best determine when to turn on MDS.
With a manual, the brain is the human and trying to coordinate the engine computer and the human brain and when to turn on or off the MDS and do it has been long ongoing issue.
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For I know the plans I have for you," declares the LORD, "plans to prosper you and not to harm you, plans to give you hope and a future. Then you will call upon me and come and pray to me, and I will listen to you. You will seek me and find me when you seek me with all your heart.