Based on the chat-room comments, I was viewed by the college students who watched as the skunk at the party for defending human exceptionalism.
Plants are icons of sustainability. They create critical products for other living organisms while utilizing waste products.
Plants mine energy from a primary source (sun) and transform that energy into a secondary source (sugar).
Photosynthesis has been criticized as inefficient. Why? Because it is assumed to be the product of a mindless evolutionary process.
Based on the same fossil evidence, there is obviously much room for speculation and quite different opinions.