Non-cognitivism is an important theory of Meta-Ethics, Ayer’s Emotivism is the most innovational and typical and earliest idea of Non-cognitivism in 20th.
From the earliest region-position code, and then graphemic code to the very fashionable pinyin input method, it becomes wider, faster, intelligent and humanization.
The earliest reliable historical records of the Jews date from around 1200 BC in unfortified villages in hill country far from Canaanite coastal cities.
The earliest muzzle-loading rifles were more difficult to load than smoothbore muskets, but the invention of metallic cartridges made possible the development of breech-loading mechanisms.
To the question why we do not find rich fossiliferous deposits belonging to these assumed earliest periods prior to the Cambrian system, I can give no satisfactory answer.