Mercedes boss Toto Wolff has always lived off the mantra that the day his rivals should fear the most, are those when his team has suffered pain.
Last year, for example, he famously used Mercedes' defeat at the Belgian Grand Prix as a focal point for his team to dig deeper and push towards what would be its fifth straight championship double.
It appears we've had a similar trigger point at the start of 2019 too. Mercedes was able to recover from a difficult first test - dramatically labelled by some as a 'crisis' - to unleash a vastly improved car for the second test that it was able to tune and turn into a surprise winner in Australia. The narrative is not quite that simple, though.