The mode of legally relevant inspection varies:
1. Grain heap: its visible face.
2. Folded cloth: its exposed surface.
3. Perfume for a blind purchaser: relevant smell.
4. House for a blind purchaser: adequate description.
The shared theme is recognition sufficient for the particular goods, not one universal physical act.
Modern applications should be examined under the wider fiqh rather than decided by superficial analogy alone.