Maybe in Goldman that's where he learned to betray repeatedly his colleagues
As to what knowledge he brings to the table, the answer is nothing. He's just buddies with the IB establishment. That's why I would vote Starmer despite being right of center, him being positioned ahead of voter desires was unacceptable.
Europe has paid a high price for neglecting its manufacturing base. Asking it to do the impossible, producing at chinese prices under heavy regulation and high salaries.