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IMO, science will always be looking for a better answer.But, why teach something as science that is speculative at best?
If you are teaching something that is 75%(not 99% or 100%)correct, you are teaching a possibility not a fact.
And,please spare me the "You evidently do not understand the scientific method" speeches.
What?
To which issue are you referring? The ToE or Abiogenesis? The ToE is well beyond speculation.
Abiogenesis should always be taught as "This is what we have so far. It's plausible, fits in with the evidence at hand, but truthfully, since it happened 3 1/2 billion years ago, we'll probably never know for sure."