Brain interfaces.

You forgot coffee between 3 and 4!

They are all about making the transmission and accumulation of information easier.

I am just guessing here. I feel we will get more connected to biology in the future meaning communication with your cells and what your body is trying to tell you.

1. ideas as spoken words

2. spoken words as symbols

3. symbols as data

4. data as packets

Speaking is the only one on that list not generally considered a technology. Every human civilisation we know about has developed spoken language. It seems to be built in to us.

Writing has only been independently invented a few times in history, as far as we know. Some historians reckon that map-making came before written language and it was that which had the largest impact.