Is ECMAScript really a dialect of Lisp?

Question

A friend of mine drew my attention the welcome message of 4th European Lisp Symposium:

... implementation and application of any of the Lisp dialect

Answer 1

I think that ECMAScript is a dialect of LISP in the same sense that English is a dialect of French. There are commonalities, but you'll have trouble with assignments in one armed only with knowledge of the other :)

I find it interesting that only one of the three keynote presentations highlighted for the 4th European Lisp Symposium directly concerns Lisp (the other two being about x86/JVM/Python and Scala).