I think it will happen sooner than that. Once you have a 3 days heatwave, it's bad. If they occur during summer and the next summer, and if they last for 1 wee

I think it will happen sooner than that. Once you have a 3 days heatwave, it's bad. If they occur during summer and the next summer, and if they last for 1 week or more, several times per summer, people will not talk about it, but feel it and understand that global warming is settling in and will not go away. The problem is that the temperature increase can be sudden and difficult to anticipate. A heatwave can also kill a lot of people (the elderly, the young, people will fragile health, and also people who don't prepare or don't listen to warnings). You're right that in 10 years there are strong chances for a global panic, but if crops yields are bad it can also have fast consequences. It just hope the wakeup calls will make people react swiftly and as soon as possible. I'd rather have a big heatwave that gives enough political capital to act and do things, than a slow and creeping climate change where nothing is done and it becomes too late.