A structure this pretty just had to exist" what does it mean??

Question

please translate it in simple form..i can't understand its meaning...

Answer 1

It means that the speaker likes the syntax structure. The statement is an illogical yet emotional way of expressing this like.

Answer 2

In his book "The Double Helix" (1968), Nobel prize winner James D. Watson wrote "A structure this pretty just had to exist" when he wanted to emphasize how beautiful the structure of DNA was. He was a co-discoverer of the molecular structure of the DNA double helix, the molecule that carries genetic information from one generation to the other.