>>14 there are some implementation differences in how backquote is implemented
Consider this: A pack of wild implementation differences.
Savage, slavering implementation differences nearing your source code. Trampling your lisp macros. Raping your code walker.
And you can't do shit since they're savages. The subtle difference grabs your project and fucks it with its heisenbug stick.
The primal implementation differences finally dominate your lisp environment. They produce confusing errors all around and you are forced to be their slave.
Such is the downfall of Lisp Programmer.