The thing that people often over extrapolate based on Special Relativity (SR) and other things like Quantum Mechanics (QM) is they think that "relative" (or for QM, "probabilistic") means arbitrary. No, in fact while time is not "absolute", certain things about time for all observers are constrained. For example, the time between events depends on the observer, but use that time separation multiplied by the speed of light--the distance a light ray travels in that time--and take the square of that distance and subtract the square of the distance between said events' locations, this quantity is the same for all observers. This IS a constraint on the "distance" between events in SR.<p>This really isn't the relativity that the author alludes to, but I have something to say about this too. As physicists, we term this "relativity" the author deals with as "dealing with units." Having a concept of time is meaningless without a given scale. For example, for the ultraintense-plasma interactions that I am discussing in the paper I'm writing today, a picosecond is a long time given that the electro-magnetic dynamics I care about happen on the femtosecond scale. For the hydrodynamic simulations my groupmate will work on, picoseconds are the timescales of significance. Of course, when heating the coffee in the cup next to me, the barista measures timescales much larger than this, of the order of seconds, exponentially longer than both of the former scales.<p>Life is a complicated phenomenon which captures dynamics at many scales. Thinking about life can be just as complicated, if you let it. An issue I often see is equating parts of life with other parts and thus, using the same scales for both. This often leads us into trouble. Why does it take my friend an hour to shower while it only takes me ten minutes? If I can write a python script in one day, why the hell does it take this junior dev two weeks to make his? Of course, the same issue here is a novice physicist comparing the fs physics I deal with to the ps my friend does, the comparison isn't valid just because they are both "times."<p>This is why even though life seems short for some people it can seem long for others. Just because 80 years is a year and people are people, any given individual has their own experiences and opinions that shapes their vantage point, and it can be hard to really compare the two. Of course, just like the "real" relativity SR, there are certain constraints we can make on time in this context, many people might prefer longer lives even if we lived 1000 years if millennial* olds are as selfish as us 80-year-ers are. But the diversity in context must be taken into account as it should be for me when I model ultra-intense laser plasma interactions. Context always matters.<p>Thinking about the context for each person's scales makes our look on life a little less absurd. I think that more often than not, people's motivations (for desiring longevity, for instance) have good reasoning in them, especially when you consider their context.<p>[*] It's funny that millennial here means people who are 1000 years old as opposed to people in their late teens to early twenties.