I began to speak well at a very advanced age - 15, 16, 17 years old. It was psychological: the trauma of war, my family and growing up on my own. I was more or less a street kid. ↗
But my method of the pillar, as it throws the horse yet more upon the haunches, is still more effectual to this purpose, and besides always gives him the ply to the side he goes of. ↗
At some point, you can't lift this boulder with just your own strength. And if you find that you need to move bigger and bigger boulders up hills, you will need more and more help. ↗
Sense data are much more controversial than qualia, because they are associated with a controversial theory of perception - that one perceives the world by perceiving one's sense-data, or something like that. ↗