that is why we have "experts" and people with real vision, who then kick the politicians into action.
Which is exactly why HS2 is going ahead... ...because by their own admission, its the "experts" who make a dollop of cash, and secure their futures.
Every "expert" I spoke to at the various HS2 events I went to pretty much said that, unprompted, after I ran circles around their figures and business plan (which was, even to the stupid, non university educated village idiot like me, randomly made up statements to get the figures so they only needed a 60-70% running subsidy from the taxpayer).
So, once you accept the "experts" have completely different agendas to the general good of the country, and make wild shit up randomly to try to justify it, you will understand all you need to understand to see its a woefully wasteful idea.