Lisp mentality vs. Python mentality

[namekuseijin]

Dan Sommers wrote:
> On Mon, 27 Apr 2009 07:57:00 +0300, Ciprian Dorin, Craciun wrote:
>>     I agree with your opinion about keeping the abstraction layers
>> shallow, but in my view high-order and helper functions do not comprise
>> a new abstraction layer. For example in Lisp, using map, reduce (fold),
>> or any other high-order function is just like using for, or while in a
>> normal imperative language.
> 
> If I hit a call to map or to reduce, I've hit the bottom:  map and reduce 
> are defined by Lisp and not by the programmer.

You truly don't know Lisp.  *Everything* in Lisp can be _redefined_ and 
if you can't do something conveniently that way, you can use a _macro_ 
to implement convenient new syntax for it.