Euan Squires (1933-1998)
"It is probably fair to say that much of the 'unease' that most of us feel with the Everett interpretation comes from our belief, which we hold without any evidence, that our future will be unique. What I will be like at a later time may not be predetermined or calculable (even if the initial information were available), but at least I will still be one 'I'. The many-worlds interpretation denies this. For an example to illustrate this lack of uniqueness ( some world say rather to show how silly it is) we might return to the [double slit] experiment and suppose that the right-hand detector is attached to a gun which shoots, and kills, me if it records a particle. Then after one particle had passed through the experiment, the wavefunction would contain a piece with me alive and a pieve with me dead. One 'I' would certainly be alive, so we appear to have a sort of Russian roulette, in which we cannot really lose! Indeed, since all 'aging' or 'decaying' processes are presumably quantum mechanical in nature, there is always a small part of the wavefunction in which they will not have occurred. Thus, to be completely fanciful, immortality is guaranteed - I will always be alive in the only part of the wavefunction of which I am aware!"
- Euan Squires, The Mystery of the Quantum World, Institute of Physics Publishing, 1986.