>>12704765but the eye would be able to see a greater field of vision since the bone is not in the way.
It may be better to have a greater field of vision in evolutionary terms if threats that end the life of the individual come from those angles more often.
If they come from those angles less often, then the requirement to see in those directions becomes an unnecessary risk and the added brain space becomes more important than the sloping brow and the associated field of vision.
