I did see the closing ceremony. And I agree with everyone on that too.
Like Isambard himself, Danny Boyle had the vision and the balls to carry off the extraordinary and the unexpected whilst the world watched. That sort of unique was always going to be a tough act to follow for Kim Gavin. So the closer turned out to be just what most people would dream up for themselves at home as a gigantic milestone spectacle.
If you are going to follow expectation the only way left to excel is to be superb in execution. If you are going to smash those expectations the ideas had better be really marvellous. And then you have to be even better at delivering as well. That gets close to genius.
Further note: both the opening and closing shows featured cigar smoking.
One more: Danny Boyle did not, of course, take the absurd risks with life and limb that IK Brunel took. That's one reason why in two hundred years people will still celebrate Brunel but for that sort of adulation Danny's going to have to build the Great Eastern.