Are They Friends?
This site will tell you whether any two people living or dead were or are currently friends. Our methodology is known to be 99.9999999% accurate.
This site will tell you whether any two people living or dead were or are currently friends. Our methodology is known to be 99.9999999% accurate.
Thinking
No.
This system determines friendship probability using established demographic data and combinatorial analysis. The baseline probability for any two randomly selected individuals having been friends is approximately 1 in 1 billion (0.0000001%).
Demographic estimates place the total number of humans ever born at approximately 100–120 billion. We use a conservative estimate of N = 10¹¹ (100 billion) individuals.
The number of unique pairs that can be formed from this population is:
C(N,2) = N(N-1)/2 ≈ 5 × 10²¹This represents all possible friendship pairings across human history.
Based on Dunbar's research on social group sizes, we estimate the average individual forms approximately 100 meaningful friendships over their lifetime. This yields:
Total friendships = (10¹¹ × 100) / 2 = 5 × 10¹²Division by 2 accounts for bidirectional relationships.
The probability P that two randomly selected individuals were friends is:
P = (Total friendships) / (Total possible pairs)
P = (5 × 10¹²) / (5 × 10²¹)
P = 10⁻⁹
P ≈ 0.0000001% (1 in 1 billion)The overwhelming majority of human pairs are separated by:
These factors reduce friendship probability to near-zero for most pairs.
If results appear inconsistent with user expectations, this likely reflects an unrepresentative data sample. Feel free to try again with less biased inputs.