The concept of a vast 'mating marketplace' driven by immediate value signals is a recent phenomenon. Evolutionarily, humans formed bonds based on long-term compatibility within small, familiar tribes, suggesting that today's dating apps create an unnatural and potentially detrimental dynamic.

The common fear that women earning more degrees than men is causing a rise in singledom is a 'red herring.' Data on modern couples reveals no increased risk of breakup or instability in relationships where the woman is more educated than the man. These mismatched pairings are common and just as successful as others.

The key to a successful long-term relationship isn't just chemistry; it's a partner's psychological stability. This is measured by how quickly they return to their emotional baseline after a setback. This resilience is more predictive of success than more fleeting traits.

The traits that make someone desirable for short-term encounters, like conventional physical attractiveness, are largely irrelevant to their quality as a long-term partner. People who have many short-term partners are not inherently worse at long-term commitment. The two skillsets are independent, challenging the 'alpha vs. beta' dichotomy.

To maintain relationship stability, people in committed relationships unconsciously deploy a 'pro-relationship bias.' They automatically perceive attractive alternative partners as less appealing than they actually are. This psychological defense mechanism downgrades temptations and helps insulate the relationship from outside threats.

The idea of a universal attractiveness scale (e.g., '10s' vs. '2s') only applies to initial encounters with strangers. As people get to know each other over time, their opinions on who is attractive diverge significantly. This allows individuals to find partners they personally rate as a '10', even if others don't agree.

Strong initial chemistry is often mistaken for genuine compatibility, leading people to commit prematurely. The subsequent attempt to change a partner to fit a preconceived vision inevitably breeds resentment and conflict when values are discovered to be misaligned.

The success of a long-term relationship is better predicted by how partners handle conflict and disagreement than by how much they enjoy good times together. People are more likely to break up due to poor conflict resolution than a lack of peak experiences.

Speed dating studies show couples who "click" are biologically in sync, even if a person violates the other's stated preferences (e.g., height, religion). This highlights the limits of algorithm-based matching, which cannot capture this multi-sensory phenomenon.