The Power Letter invokes the 1959 frog-retina paper to discuss alternative routes to efficient intelligence.Biological analogy is not proof of token ownership or authorship.TIBBIR UNIVERSE THIS IS TIBBIR How to get TIBBIR Ribbit in numbers Connected clues Account archive Bridge & contracts On-chain research Connections Community The story Reading room Network map Timeline Findings Source library Conversations People & companies Open questions Export & reuse