James,
My eye has more of an 'appreciation' of the first image... the 'second'... the 'inversion' of the one above can be more than somewhat of a 'mind-bender'... but made me 'think again...and again. Had they not been shown as a 'pair'
It might have taken 'me' a little more time to realize that there might be something a-foot that fooled this hominid eye/brain combination into seeking the "What the H*ll is going on?????
Well done, Sir
Ken