I have gotten to the thermodynamics portion of my physics class, and right now I'm reading about entropy. It is taking me forever to read the chapter though because I keep pondering so many questions. - How can life be possible with the concept of entropy? Cells must organize themselves in very distinct ways in order to function correctly, but this seems to defy entropy (though maybe I'm thinking to broadly). Also, the formation of planets is an example of organization of matter in nature. - This paragraph really caught my eye "No decrease in energy occurs when hot and cold water are mixed. What has been lost is not energy, but opportunity, the opportunity to convert part of the heat from the hot water into mechanical work. While removing heat from the hot water and giving it to the cold water, we could have obtained some mechanical work, but once the hot and cold water have been mixed and have come to a uniform temperature, the opportunity to convert heat to mechanical work is lost irretrievably." I can't help but draw connections to this from everyday life. There have been "opportunities" that I have let pass me by (although macroscopic), that may never present themselves again. And yes I know this is very corny, but it made me think! - Another sentence "When entropy increases, energy becomes less available, and the universe becomes more random or 'run down'". This absolutely blows my mind! Neglecting the big crunch and assuming that the universe will continue on forever, is it possible that eventually there will be no structure in the universe at all? Would this include the structure of time and space and the laws of physics and mathematical axioms all together? How can something that seemingly has structure which is only an abstract idea such as mathematical axioms deteriorate? Anyone care to comment on these questions?