Comment Re:50 exactly (Score 1) 382
Yes, you are.
Any closed smooth three dimensional space ('manifold') without boundary where all loops can be contracted to a point is 'homeomorphic' (essentially the same as) the three dimensional sphere (that is, the unit sphere in 4 dimensions).
The words "homologous" and "boundless" have little/nothing to do with it.
After Goliath's defeat, giants ceased to command respect. - Freeman Dyson