An impersonal force might be leading you to a wilderness of perfect flatness or a peak of perfect height.

Perfectly flat surfaces in contact give optimal cooling, but perfect flatness and absence of microscopic air gaps is not practically possible, particularly in mass-produced equipment.

If a joke falls flat, a small school of aesthetes only ask us to notice the wild grace of its falling and its perfect flatness after its fall.

And the transponders being all individually identifiable, and pegged to the map, their navigation was always more sure than it seemed; so every dawn they would spot a strip down in the shadows ahead, a welcome blond pencil strip of perfect flatness.

This air-gap wedge has a unique property- it is very thin (micrometer scale) and it has perfect flatness ( λ/10).

On my left the rising Sun was a day and a half high, twenty degrees or less; it made bright the desert floor, with long shadows emphasizing anything other than perfect flatness, thereby making driving easy for Aunt Lilybet.

She missed the perfect flatness where - peering from her third-floor room under the steep gables- a little girl could look fifty kilometers across tasseled fields to watch a storm approach like a bruise-black curtain lit within by lightning bolts.

She stood sideways and ran her hands down the front of her tightly cinched robe, over the perfect flatness of her belly.

Surface imperfections and departure from perfect flatness inherently arise from limitations in manufacturing technology and range in size from visible and tactile flaws such as machining marks or casting irregularities to sub-microscopic ones not visible to the naked eye.