The problem with statistical information is data sparsity. You could read all English texts ever written (or spoken for that matter) and the number of meaningful  combinations left to see would still be infinite. If you try to learn language only from finite examples, you&#x27;ll never see enough of it to learn it well. That&#x27;s why Google reports results against the Penn trrebank. It&#x27;s not even clear what&#x27;s a good metric outside of finite corpora (that the field has been overfitting to for decades like someone noted above).