3258: Plate Flip

2026-06-15T01:52:40Z

7amithorn: /* Transcript */ Added how the characters are standing in each frame.

{{comic
| number = 3258
| date = June 12, 2026
| title = Plate Flip
| image = plate_flip_2x.png
| imagesize = 740x272px
| noexpand = true
| titletext = It's great for exfoliating your skin, bones, houses, cities, landscape, etc.
}}

==Explanation==
{{incomplete|This page was FOUND ON THE UNDERSIDE OF THE CONTINENT. Don't remove this notice too soon.}}

[[Ponytail]] resumes her role as a cosmic home inspector from [[3037: Radon]] and [[3059: Water Damage]].

She asks [[Cueball]] when the last time he flipped the {{w|tectonic plates}}, because they look heavily eroded. This may be an allusion to the practice of turning mattresses over every few months. This was common until the 20th century, to even out the wear and tear, and prevent permanent body impressions. When modern box springs became common, the practice became unnecessary.

Flipping mattresses only makes sense because both sides are similar to each other, but the "underside" of a plate is nothing like the surface. The current side that Cueball and Ponytail are standing on is the outermost layer of the {{w|Earth's crust|crust}}. However, the "underside" of the plate reaches until the solid layer of the {{w|mantle (geology)|mantle}}, whose temperature can reach over 1000 °C. As Cueball points out, if you could flip a continent over, the new surface would be molten rock, not a surface suitable for life. Ponytail thinks the warmth would be soothing, and that walking on it would {{w|exfoliation (cosmetology)|exfoliate}} your feet, but at hundreds of degrees, it would do far more damage than just removing dead skin.{{citation needed}}

Of course, such an idea would be impossible to do. The Earth's crust is far bigger than us, and any plate-moving technologies would need an insane amount of power, much more than we have. As well as that, it would be impossible to flip the whole crust over, as the plate-moving technology would have to be on part of it! Even by doing various plates at a time, the temperature increase from moving just one of them would already be deadly. The title text also reveals that somehow the crust is to be moved without moving the numerous things on it, which would further complicate matters.

Even if the immediate calamities from turning the tectonic plates upside down were ignored the turned plate would be inhospitable to life. There would be no soil, only igneous rock, meaning no ground water could form resulting in an immense desert. Given enough time erosion and pioneer species would restore the geosphere this would also cause the "problems" ponytail tries to fix to reappear.

The title text expands on this joke, saying that it would "exfoliate" just about everything on the surface (which would somehow have to stay in place while the plate below it is flipped; alternatively, everything is flipped along with the surface and ends up under the crust). If this flip was to somehow happen it would indeed do that, but it would also melt just about everything on the surface, which is less than ideal.{{citation needed}}

==Transcript==
{{incomplete transcript|Don't remove this notice too soon.}}

:[Ponytail is looking at the ground in front of her, a hand on her hip. Cueball stands behind her, to the right.]
:Ponytail: These tectonic plates look pretty eroded. When did you last flip them?
:Cueball: Flip them?

:[Zoom out to see the ground. Ponytail walks forward, motioning at the ground. Cueball spreads his arms behind her.]
:Ponytail: Yeah, to use the underside of the continent.
:Cueball: ...Never?
:Ponytail: Wow. Explains the eons of weathering, debris basins, and ... is this isostatic depression?
:Cueball: It's rebounding!

:[Ponytail stops walking and turns to Cueball.]
:Ponytail: You should really flip it. You'll get a whole new landscape!
:Cueball: But I like '''''this''''' landscape!

:[Ponytail spreads her arms slightly.]
:Ponytail: Just think how warm and fresh the other side will feel.
:Cueball: A sea of molten rock?
:Ponytail: Good for the feet. Helps exfoliate.

{{comic discussion}}<noinclude>

[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Cueball]]
[[Category:Geology]]
[[Category:Home Inspections]]

explain xkcd - User contributions [en]

3258: Plate Flip