https://www.youtube.com/watch?v=MxIiiwD9C0E
Here is Elon answering questions of National Academy of Science members about Starship. He explains in detail why he pushed the team towards steel and away from carbon fibers:
https://youtu.be/da3iF2Np51A?t=951
Here you have another direct conversation with Elon:
https://youtu.be/t705r8ICkRw?t=172
Here is Elon discussing with Sundy Munro mass manufacturing and engineering.
Sandy Munro is a veteran engineer from General Motors supplier and directly at Ford. Sandy Munro is now running a consultancy company that tear downs cars and suggests improvements to wide range of clients from the car industry.
Also, Musk was doing a physics PhD in battery tech at Stanford when he dropped out to found Zip2.
There is some long running pattern here with getting cold feet on bad decisions ^^ .
It’s funny how quickly the left changed from loving him for turning the car industry on its head to hating him for taking away the left’s hate machine. Oh well.
Being accepted is not the important part of PhD work, no.