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∂04-AUG-76  0908	FTP:Guy L. Steele, Jr.  (GLS @ MIT-AI)	Hiya back  
Date: 4 AUG 1976 1208-EDT
From: Guy L. Steele, Jr.  (GLS @ MIT-AI)
Subject: Hiya back
To: jra at SU-AI
CC: GLS at MIT-AI

[a] Congratulations on upcoming nuptials.
[b] I have been plowing through chapter six, but
    have been very busy lately with MIT projects.
    I have not forgotten you, however.
    One problem is that I got very frustrated halfway
    through the chapter, because of the great profusion
    of confusion, and it took a long time to get
    up the courage to continue.  (Primarily, I was
    somewhat annoyed by the radical changes you claimed
    were necessary to EVAL to get in shallow binding,
    whereas if you had coded the deep binding more
    modularly earlier, the changes would be much less drastic.)
Oh well, I'll look forward to seeing new version,
and will passs on my comments on chapter six in any
case when I finish it.  Cheers.
				- Guy
-------

∂10-SEP-76  1253	FTP:Guy L. Steele, Jr.  (GLS @ MIT-AI)  
Date: 10 SEP 1976 1552-EST
From: Guy L. Steele, Jr.  (GLS @ MIT-AI)
To: jra at SU-AI
CC: GLS at MIT-AI

Ooops, I meant to send off chapter 6 some time ago.
Okay, fair trade.  It may take a few days to get all together...
-------

∂03-Dec-76  2304	FTP:GLS at MIT-MC (Guy L. Steele, Jr. ) 
Date: 4 DEC 1976 0202-EST
Sender: GLS at MIT-MC
From: GLS at MIT-MC (Guy L. Steele, Jr. )
To: jra at SU-AI
CC: GLS at MIT-MC
Message-ID: <[MIT-MC].17919>

The following mail got routed to some weird destination
at MIT-MC, so I am mailing a copy in case it DIDN't get
to SAIL.

GJS@MIT-AI 12/02/76 20:48:49
To: JOHN at MIT-AI
McCarthy 
It's on its way.

∨
GLS@MIT-AI 11/26/76 00:44:20 Re:  MONEY, MONEY, MONEY -- also turkey, turkey, turkey
To: GLS at MIT-AI, JOHN at MIT-AI
Allen 
much gratitude for the money!
also, recall that "trce, trce, trce" is the best way
to exchange two bits in a pdp-10 ac (see "hakmem"),
and so is appropriate for today.
also great frabjosity today because boston latin
won the latin english game 11-6.
(one day a year i turn into a rabid football fan for
the morning.)


∨
GLS@MIT-AI 11/22/76 12:30:29 Re:  lisp 
To: JOHN at MIT-AI
CC: GLS at MIT-AI
Allen 
One other reference you might want to look at if you haven't
already is:
	Fateman, R.J.  "Reply to an Editorial."  SIGSAM Bulletin 25, pp. 9-11.

I have tried to read the new chapters 2 and 3, but may not have too
much time in immediate future.  I'll do what I can.

Presumably what Moses meant was that such details as actually exist
are okay for the public to have.  Unfortunately few actual documents
have been produced.  That situation should improve in next 6 months.
Meanwhile, I may be able to answer any specific questions
if you need them for the book.

I would be very interested to see Cartwright's work -- I haven't
heard of it.
			-- Cheers, Guy

∨

∂04-Dec-76  1321	FTP:GLS at MIT-AI (Guy L. Steele, Jr. ) 
Date: 4 DEC 1976 1620-EST
Sender: GLS at MIT-AI
From: GLS at MIT-AI (Guy L. Steele, Jr. )
To: jra at SU-AI
CC: GLS at MIT-AI
Message-ID: <[MIT-AI].34717>

I assume you meant "hunks".  They are essentially a crock,
which I am not entirely proud of, to stave off the address space
crunch in the PDP-10 implementation of MacLISP.
They are essentially short vectors of fixed size; they have
no header as an array does (which occupies 8 words or so).
People generally use them to create small heterogeneous data
structures of more than two components.  They take half the space of
a list, since no cdr pointers are needed.  They will not
exist on the LISP machine implementation, as the cdr-code
notion yields exactly the same savings, more or less.
Hunks also provide slightly faster access than a list does, but
that consideration is secondary to that of space.


∂27-Dec-76  1247	FTP: host AI	xxx    
Date: 27 DEC 1976 1547-EST
Sender: gls at MIT-AI
Sent-by: DVM at MIT-AI
Subject: xxx
To: jra at SU-AI
CC: gls at MIT-MC
Message-ID: <[MIT-AI].42656>

No word from McGraw-Hill yet; my thumbs are now getting
quite long.  My BS [sic] Thesis is indeed available from
Harvard as a Technical Report.  I eagerly await the
publication of the book.  Merry Christmas, Happy Chanukah,
Thrilling New Year, usw.