Herzog_Zwei SG Repeitition does that, keep doing the same action over and over again, you get deja vu.
An Eternal Now SG Could be that you have seen it in your past or even dreamt about it. I've read a news article before that deja vu is according to science linked with 'temporal-lobe epilepsy'... an impression just a moment ago taken to be like it happened long time before.. or something like that.
