More often than not you'll say something like the above "It's not my contention that...) and then say the exact opposite. Perhaps you might want to reconsider that approach.
I'm merely saying that there are not necessarily any paradoxes going forward in time but
there are necessarily paradoxes going backward in time. I don't need to know the nature
of these paradoxes or how they affect things in the real world in order to identify the fact
they would exist as soon as something went back in time.
Maybe Dr Who is right and time is just a wibbly wobbly mess turned in on itself and minor
paradoxes have no effect. But W(w)ho knows more than Dr Hawking.(?) The only thing
we know for certain is time progresses only one direction at the same rate as determined by
speed. We can measure it but our definition of it does not allow us to manipulate the event
itself. While theoretical means exist to time travel they are not based on actual knowledge