Joshua Jackson: ‘I think the process of not being a d*** is a lifelong one’

The ‘Dawson’s Creek’ star is stepping into ‘the repulsive phase’ of his career, playing a real-life neurosurgeon who left behind a trail of damaged patients. He talks to Adam White about ageing, the toxicity of early fame, and his soul-searching about whether America is a fit place to bring up a biracial child