2 The source data
What is data? What forms can data take? This article tries to tackle with any source data or at least with the most common ones.
Data can be structured or unstructured. Machines need structured data to work with (at least until now, artificial intelligence could change this over time), while human consumers prefer unstructured data (we call that content), where layout matters.
We, humans, usually add context using implicit knowledge to compensate for unstructured data, while machines can't. By reading a receipt, humans know that it's implied a transaction, a buyer, goods, money, etc. etc. Computers don't; they need explicit, structured information.