In my opinion, we do not need to fully solve the origin of life on Earth before detecting life elsewhere—but it would definitely help.

We can already search for life using observable clues, like atmospheric biosignatures (e.g., oxygen and methane together) or unusual chemical imbalances. These methods don’t require us to know exactly how life began; they rely on the fact that living systems tend to leave detectable fingerprints in their environment.

However, not fully understanding the origin of life does create uncertainty. If we don’t know all the possible ways life can arise, we might:

• Miss unfamiliar forms of life that don’t produce the biosignatures we expect
• Misinterpret signals, confusing non-living processes with signs of life

So solving the origin of life would make our search much more reliable and broader. It would help us recognize life that is very different from Earth life and avoid false positives.

In conclusion, it’s not a strict requirement—but the better we understand how life begins, the better we’ll be at confidently detecting it elsewhere.