It may not, but it seems as though we can't help doing so in the absence of certainty.

[Altaïr waves him off, not bothered by the natural tendency to wonder what-if. Despite his own words and even though he's set his mind to other things rather than torment himself with questions he won't be able to answer, it's impossible to fully avoid considering what the truth is.]

The others you spoke of — did they come from your future and notice no disappearance?

[That is interesting.]