Fluid reversibility demonstration - GIF

[Frank S]

I have a hard time believing it also. But I looked frame by frame.



There is no frame at the beginning that looks close to the last frame.

I know, I even did like you did but instead of watching the blobs I watched the hands when the hand is returned to the table where the translucent white object is the position of the arm does not match the placement of it at the beginning. I still have a doubt of the validity because seeing is not always believing unless I can witness it live in real time while it is happening, even then I don't always trust my eyes. Magicians make their living on visual deceptions