There had been times while I was watching this that I felt myself to be distinctly chronologically challenged by the implications of (people) being able to go backwards and forwards in time. Not that that detracted from my enjoyment – fairly the opposite – however unravelling among the time-logic did demand that additional bit of effort on my half. The humour varies between light and off-the-cuff banter between consuming buddies at times, to probably grave and ominous events at others. I thought the characters had been likable and the screenplay was wonderful (in an ‘peculiar’ form of means). Maintaining my curiosity was helped by the juxtaposition of the everyday with the unexpected and the inclusion of an uncertain romantic ingredient. A nice blend of sci-fi and scepticism. Great fun for the gray matter.
The experiment of Lijun Wang may additionally present causality violation since it made it doable to ship …
One way to achieve time journey into the future can be travelling at the velocity of light in space, as first theorised by Albert Einstein.