title: Really minimum lisp
body: <p>What is the minimum set of primitives required such that a language is Turing complete and a lisp variant?</p>
  
  <p>Seems like car, cdr and some flow control and something for REPL is enough. It be nice if there is such list.</p>
  
  <p>Assume there are only 3 types of data, integers, symbols and lists.(like in picolisp)</p>