> I have no idea why he did it instead of forking SBCL It's basically explained in the video. He forked ECL, because he wanted to have a CL implementation base

> I have no idea why he did it instead of forking SBCL It's basically explained in the video. He forked ECL, because he wanted to have a CL implementation based on LLVM and very deep C++ integration. ECL is already a C-based Common Lisp. > SBCL is very good, but it’s hard to say how long it will keep being developed. As long as people work on it.