At SciTechDaily: “I was struck by how stark the differences are between them,” said Tarashansky, who was lead author of the paper and is a Stanford Bio-X Interdisciplinary Fellow. “We thought that they should have similar cell types, but when we try analyzing them using standard techniques, the method doesn’t recognize them as being similar.”
A reasonable conclusion is that there is indeed intelligence involved but it isn’t in the individual flatworm. It is rather implicit in the origin and development of the flatworm. Thus the individual worm doesn’t think and doesn’t need to.