I often use the analogy "1+1=?" in debates with both friends and strangers, especially when discussing subjective topics like politics, religion, and geopolitical conflicts. It's a simple way to highlight how different perspectives can lead to vastly different conclusions.
For instance, I frequently use the example "1+1=10" in binary to illustrate that, while our reasoning may seem fundamentally different, it's simply because we're starting from different premises, using distinct methods, and approaching the same problem from unique angles.