They're simple, but from the article:

> The main problem with conventional forks is that they can’t separate bump forces from braking forces.

> As a result, a conventional fork dives under hard braking. As weight’s transferred to the front wheel, the fork springs compress. This uses up fork travel that would otherwise be available for bumps, which is bad enough. But wait, it gets worse...

> Brake dive also shortens the wheelbase and changes the rake angle. In a perfect world, engineers would certainly rather not change those parameters in mid-corner!

This makes braking mid-corner a risky proposition, which leads to accidents when riders encounter surprises mid-corner.

In the motorcycling world this is being worked around by computers, so we're not likely to see an alternate front suspension, unfortunately. https://www.youtube.com/watch?v=hHRWg91hv-M

This seems like it’s talking about front forks with suspension though? Only mountain bikes have that, and in the terrain they are made for it works well. On the road mountainbikes are terrible in numerous ways.