talkin about Einstein u need to understand delusion of speed. I show u in simple way..

u and me wearing a stopwatch. let say we start our stopwatch together. you stay there watching me and i start running at the speed of light in straight direction. to ur eyes (witness eyes) i'm gone. but to my eyes everything around me going faster( like video forwarding). you stay there a few years (dengan setianye) waiting for me to coming back. after 5 years i'm back in front of you. we stop our stopwatch together. and you ask me where did im going in five years. I said im not going anywhere just a few step in front of you and my stopwatch record 5 second only.

ok here is relativity take their part. in our space n time we can go to UK and back to KL and vice verse easily using flight . but we cannot reverse our time. i mean we CANNOT going back to yesterday.but when we moving at speed of light, space n time changing their place. u can reverse or forward ur time easily but once u flown to UK, u well never going back to KL.