There was a very calm day. There were three people called A, B and C in the middle of a ground.

A was killed by either B or C. This incident was not seen by anyone (excluding B and C). So no one other than B and C knows who the killer is.

Albert Einstein guessed that A was killed by C.

But he is wrong.

How do you prove that A was killed by B?

Note : Since I have added science Tag, I believe that your answers should be related to science

Hint :

Albert Einstein was wrong. (Pay attention to this sentence.)


closed as off-topic by Wen1now, Glorfindel, Mithrandir, Hugh Meyers, JonMark Perry Feb 27 '18 at 12:33

This question appears to be off-topic. The users who voted to close gave this specific reason:

If this question can be reworded to fit the rules in the help center, please edit the question.

  • 3
    $\begingroup$ (puts on serious science face) Well, if nobody was there to see him get killed, did he really get killed? On a more serious note, though, are you sure this isn't too broad? Having just one (apparently false) accusation, and the lateral thinking tag, might attract a LOT of answers, possibly all different than what you intend. $\endgroup$ – Lolgast Feb 27 '18 at 9:29
  • $\begingroup$ @Lolgast I don't know that what tag should be there. To get the answer, you need to think "Out of the box". What is the most suitable tag for that type of situation? I added science tag. $\endgroup$ – I am the Most Stupid Person Feb 27 '18 at 9:31
  • 1
    $\begingroup$ The lateral thinking tag most likely is appropriate, but the point is that inevitably opens up the possibility to give pretty much any answer... And I'm not sure your question has enough information to have one answer significantly better than any other. $\endgroup$ – Lolgast Feb 27 '18 at 9:33
  • 1
    $\begingroup$ Ok, now that is a good hint and no longer leaves the puzzle open ended! $\endgroup$ – Phylyp Feb 27 '18 at 9:51
  • 1
    $\begingroup$ Perhaps this is asking for too big a hint, but would this puzzle still be solvable if the names A, B and C were replaced with "Grant, Samantha and Timothy"? $\endgroup$ – Bilkokuya Feb 27 '18 at 12:36

A slightly tenuous guess...

The killer is B

Because Einstein was wrong about C, then...

The speed of light $c$ is not a constant, and there was a time just after the Big Bang when light speed was faster. This event was at the Big Bang, so B is the killer.

Reference: https://www.forbes.com/sites/bridaineparnell/2016/11/28/could-einstein-have-been-wrong-about-the-speed-of-light/

Tenuous, I know ☺


My guess:

C was fate or God, B was quantum mechanics and A was Schrödinger's cat.


Einstein famously said, "God does not play dice with the universe," and rejected the "spooky action at a distance" at the heart of quantum mechanics, so he must have believed events were deterministic (fate) or due to God. However, experiments have shown that quantum mechanics holds, so Einstein's theory must be wrong and quantum mechanics, not fate or God, killed Schrödinger's cat.


No-one sees the cat while it is in the box.

  • 2
    $\begingroup$ Then obviously B could also be curiosity... (No, this is not a serious complaint :P) $\endgroup$ – Lolgast Feb 27 '18 at 10:09
  • 1
    $\begingroup$ @Lolgast If they took the cat to Mars, perhaps :P $\endgroup$ – boboquack Feb 27 '18 at 10:09
  • 2
    $\begingroup$ You have To think "the cat" outside the box... $\endgroup$ – Untitpoi Feb 27 '18 at 10:16
  • 1
    $\begingroup$ I love this answer!!! $\endgroup$ – ABcDexter Feb 27 '18 at 12:25

I think that

If Albert Einstein guessed that A was killed by C, but was wrong (presented as a fact), then A was killed by B.

  • $\begingroup$ Welcome to Puzzling.SE! Could you edit your answer to include spoiler tags, so as not to spoil the solution for anyone who wants to have a go at the puzzle themselves? $\endgroup$ – F1Krazy Feb 27 '18 at 10:50
  • 2
    $\begingroup$ There is a lateral thinking tag and a science tag. These means you need to find an answer with a link to science and to think 'out of the box'. The answer is not some kind of logical deduction. $\endgroup$ – Untitpoi Feb 27 '18 at 10:54

Not the answer you're looking for? Browse other questions tagged or ask your own question.