Observation: Since before humans were humans, they formed tribes and fought for resources and territory.
Liberal Hypothesis: we can all live together regardless of culture.
Problem: The hypothesis isn’t scientific, as it doesn’t explain past data.
Experiment: Mix Westerners with Moslems
Experimental results: horrifically murdered little girls, hundreds injured. Repeat experiment, get same results in France, Germany, Sweden…
Liberal Conclusion: Get used to your children being killed, “we’re all in this together”, the hypothesis is not shown to be wrong.