Ah I see. A process isn't physical. That's a shame. But you say this knowledge is in your brain, how then can you be aware of it if it isn't physical? Are you physical? Yes it does have everything to do with reversibility. If ALL information is available, then you should be able to extract the position and velocity information for every particle in a gas at equilibrium, like Maxwell's demon. So why can't you, or even a putative demon, do that? And seriously, you can't and nor can anyone, and for very good, nay rigorous, reasons.