Let me set the record straight.
December to February is summer in Australia.
Late Jan and Feb is the hottest time of the year.
Melbourne has not had an extremely hot summer in 3 years. Three years ago the temp hit 48 degrees on a particular day and you also had bushfires blazing 3 hours away.
I may be wrong but I don't recall the closed roof policy being invoked for heat at the past 3 Opens.
Melbourne is also notorious in Australia for producing 4 seasons in a day. I've seen it hail on a nice sunny day when there wasn't a cloud in the sky. The roof was originally installed because of the rain.
Melbourne Park is set to get 2 more retractable roofs.
Australia is a country, island and a continent. We don't touch any other country, we are completely surrounded by water.
Op troll or not, there you have it.
That is all.