moe darklight said:even if the universe is infinite, why can't there be an infinite number of possible combinations for "things"?
You're thinking of MWI (Many-Worlds Interpretation). Here are two links you can read about it.Absolution said:I once heard somewhere that due to some physics theory, there is someone out there in the universe doing exactly the same thing as you and looking exactly the same as you. I can't remember the details though... Anyone heard of this before and can clarify?
I don't think it seems plausible though..
"Same person, doing same thing" refers to a common experimental design in which the same individual or group is tested under identical conditions multiple times. This allows for comparison of results and reduction of variability due to individual differences.
This design helps to control for external factors and individual differences that can affect the results of an experiment. By using the same person or group, researchers can be more confident that any differences in the results are due to the manipulated variable and not other factors.
One limitation is that it may not be feasible or ethical to test the same person multiple times, especially if the experiment involves a potentially harmful intervention. Another limitation is that the results may not generalize to other populations, as individual characteristics can vary greatly.
Researchers can use a control group that receives a placebo or no intervention to compare against the group being tested multiple times. They can also use a larger and more diverse sample to increase the generalizability of the results.
Some examples include studies on the effects of exercise on mood, where the same individuals are tested before and after a workout, or studies on the effects of medication on cognitive performance, where participants are given the drug or a placebo and tested multiple times on the same tasks.