:: COMPARE ::
The short answer
Not opposites, despite the framing. Weak emergence is fully compatible with reductionism — the lower-level physics is sufficient, just computationally intractable. Only strong emergence would genuinely break reduction, and that case is unproven.
Side by side
| Aspect | Weak emergence | Strong emergence |
|---|---|---|
| Derivable in principle | Yes | No |
| Needs simulation | Yes | — |
| Breaks reductionism | No | Would |
| Evidence | Abundant | Contested |
What each one means
Emergence is the act of rising into view. In science and philosophy it names what happens when a system made of many interacting parts develops properties that none of the parts has and that you cannot predict from the parts without watching the whole thing run.
Full definition of Emergence →The contrast above sets out how Strong emergence differs from Emergence on the points that actually matter.