There have been claims made that the number of people living today is much larger than the number of people that died from when "time began". Five thousand years ago when the pyramids were built, it was estimated that there were around six billion (which is roughly similar to our current population) people that died. If this six billion estimate was true then the claims about the number of people living is greater than the death would also be true but the problem is humans today, can't specify the exact date when "time began". For example, if "time began" from 40,000 years ago the estimate for deaths would be around twelve billion people and if time began earlier than 40,000 years ago then the number of deaths would vary.
This "the number of people alive today is greater than the number of people who have ever died" is a perfect example of falsifiability, replicability and extraordinary claims. With claims like overall deaths, it is hard to create a study to show that our findings can be disproved because vague information. In order to falsify this claim, it is important to know when time actually began and when people started living. Sure, there might be numbers out there but those numbers are only estimates and there are not hundred percent correct. Also, claims like overall death is also hard to replicate. Think about it, how would a person today replicate a study about death that occurred let's say in 2007? The person that is doing the study today will have different data of numbers of death today than in 2007. The last thing also is that overall death claims is also an example of extraordinary claims. Like how I mentioned before, people said that there have been six billion people that died when the pyramids were built but that evidence is not strong enough because it is uncertain when "time began" and number like six billion people are only estimates and estimates are not always close to the accurate numbers. Approaching claim like overall deaths or other claims, it is important to always question ourselves on the data presented.