> due to abundance; ability to form many bonds; bonds that are just durable enough but not too durable Well, the thing is that all of those are environment-dep

> due to abundance; ability to form many bonds; bonds that are just durable enough but not too durable Well, the thing is that all of those are environment-dependent. We do have data on a somewhat diverse set of environments, and it's enough to confirm what we knew about the flexibility of carbon. But it's not enough to disprove the alternatives.