I think I've sorted out what really caused Coronavirus. It's David Attenborough's fault. Imagine the scene. One day the Chinese makers of plastic bags, bottles and crisp packets were moaning to their government about falling profits.. That *&&* Attenborough is killing us. Our market is shrinking faster than a cheap shirt. The Chinese government market development agency joined in. What we need is a situation where loads of disposable plastic PPE and little plastic bottles will be needed And so a plan was hatched and the rest is history.