Info entropy reduction speed = solve speed

equation of entropy

point:

   1⃣ Info entropy reduction speed = solve speed
   2⃣ solve speed ＜ calculate speed 
   3⃣ calculate speed ＜ heat emission of system
   4⃣ heat emission of system = entropy reduction speed

   then
   solve speed ＜ heat emission of system ～= heat emission of planet
   => to development space, better to increase solve speed