Yes, I guess we should prefer to go with tried and tested solutions and never try anything new. Now where did I leave my abacus?

It will be interesting to see which cities do the best in future: the ones that try to house large numbers of people at low cost? The ones that are quickest to adopt new ideas? The ones where billionaires prefer to live? Who knows.

That's not what I'm saying. The best is to try new innovative ideas. But if you are in a hurry and your house is a mess, at least start with the traditional house cleaning and then move from there.