a) According to the short video, how have these technologies improved the way that knowledge is stored, created and shared?

Pros:
save time to store and find the information
we can share the knowledge goblely easily eveywhere and time
more interaction within the writier and reader
more people involve to create knowlege
can exchange the world at once
knowledge is shared by a funny way eg.video and picture ,unlike the traditional encyclopedies

Cons:
everybody can edit the knowledge without professional knowledge
May be unreliable, misunderstanding
people may just copy the knowledge and don't thinking
less creativity of someone
knowledge may be stolen