If one can afford that kind of redundancy, then sure. Two independent lines coming in from two independent providers that individually will adequately handle all traffic for an extended period of time.
Why would you do that? It's enough to do things like run two DCs that can each handle 60% load or three that each handle 40% load. Not that much more expensive, and downtime turns into "the site is slow". There are architectural concerns, especially with data replication, but this is definitely doable, and it doesn't cost a mint.
the cloud cannot theoretically work because it's not a paradigm.
What the fuck is that supposed to mean? It's got words in it, but is entirely vacuous.
- Start a laddered reduction in social security:
Sure, I'll start paying half on the front end.
In any formula, constants (especially those obtained from handbooks) are to be treated as variables.