[bongodriver]

for example wwhy i cant reproduce the effect?

how is the 4 randomly drawn semi paralell lines in any way close to a recreation?

raaaid there is nothing magical or mysterious about your research here, these are very well established effects that exploit the flaws of the human eye...yes thats right 'everyone' sees exactly the same way you do, but the rest of us don't sit in wonder for hours of the day contemplating it, get over it it's just normal vision.