One of 5G’s biggest selling points is faster data rates than any previous generation of wireless—by a lot. Millimeter waves are part of what’s making that possible. 5G’s use of millimeter waves, a higher-frequency band than 2G, 3G, or 4G ever used, has forced service providers like AT&T and T-Mobile to rethink how 5G networks should be deployed, with higher frequencies requiring small cell sites located more closely together.

6G, while still just a hazy idea in the minds of wireless researchers, could very well follow in 5G’s footsteps by utilizing higher frequencies and pushing for faster data rates. So let’s have some fun with that—assuming such qualities remain important for future generations of wireless, where will that take us? What will 8G look like? 10G? And at what point does this extrapolation to future generations of wireless no longer make physical sense?