What heuristic emerges when comparing the difficulty of abiogenesis versus the difficulty of evolution to intelligence?

Answer

Many experts lean towards abiogenesis being common, but the jump to intelligence being rare

Many experts subscribe to a Great Filter scenario where the initiation of life (abiogenesis) is common, but the evolutionary hurdles required to reach multi-cellularity or intelligence are extremely difficult to overcome.

What heuristic emerges when comparing the difficulty of abiogenesis versus the difficulty of evolution to intelligence?

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