Re: Estranged Core Developer Gavin Andresen Finally Makes Sensible 2MB BIP Proposal!
You're right -- "massively" is probably more appropriate. 
What does this multiplier effect have to do with the bandwidth load that individual nodes must take on?
What does this multiplier effect have to do with the bandwidth load that individual nodes must take on?
That was already answered.
Could you explain it? Because I don't think it was.
A miner can broadcast a solved block to as many or few nodes as they want. Those nodes in turn will broadcast to other nodes. That is the multiplier effect I am referring to.
Sure, that's just how bitcoin works, like other networks. No one ever said every node in existence has to constantly communicate with every other node in existence. That's just an arbitrary comparison. What you're talking about doesn't mitigate this:
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Every node in the network must receive and process every transaction in every block. There is no distribution or sharing of that load.
The issue is the bandwidth load that individual nodes take on, which due to this "massive redundancy" is not at all comparable to downloading a web page. This speaks to the misinformed comparisons that XT/Classic supporters have often made between a single instance of download stream with many instances of upload stream -- hence why "web page" vs. "block size" makes for such a horrible analogy.