The Curvature of Light Cones

'We know light bends, cause we can bend it. We can see it bending like i don't see what your issues are,' he says. 'So why is it that when we show perfectly clear days and we see way past the supposed geometrical horizon that you believe in? But it's an apparent location, but you can't prove it.' He goes on to ask: 'Show me some evidence of them accounting for the cor this effect'.