A number of experiments have looked at anticaricatures, that is interpolations of the individual face towards the average, and even antifaces, which extrapolate the original face onto the other side of the mean (Blanz et al. 2000).

[…] nowhere but in America could a liberty, so easily acquired, be so easily maintained. Since that time, Heaven has smiled incessantly on the land of the free.

We cannot simply equate the L1-based lects with dialects, but could speak of them instead as ‘similects’, because they arise in parallel, not in mutual interaction. In short, there is no community of similect speakers. Similects do not develop new features or new discourse practices in the same way that language communities do — in interaction, from one linguistic generation to another.

Kemble, a black-letter man!