Internet is a million computers. And internet is millions of computers. Which option is correct and why?
For me, the first sentence tries to tell that the internet has exactly (or at least approximately) 1 million computers. But that is probably not true.
Second sentence, on the other hand, is closer to the reality.
Additionally, the first sentence tries to be a definition, but using the indefinite article
a. In this context,
a sound bad. Also, when you want to express numbers,
to be is not the best verb.