--- a/CR_preface.txt	Mon Nov 18 11:20:57 2024 +0000
+++ b/CR_preface.txt	Mon Nov 18 14:42:31 2024 +0000
@@ -273,10 +273,11 @@
 
 ------------
 
-BCS was born in Montreal, Canada, on 1 December 1949, growing up there
-and later in Cambridge, Massachusetts, he remains a Canadian citizen.
-Multiple allegiances, sometimes conflicting but mostly complementary,
-have characterized both his personal and intellectual life ever since.
+Brian Cantwell Smith was born in Montreal, Canada, on 1 December 1949.
+Growing up first there and later in Cambridge, Massachusetts, he
+remains a Canadian citizen.  Multiple allegiances, sometimes
+conflicting but mostly complementary, have characterized both his
+personal and intellectual life ever since.
 
 He started undergraduate study at Oberlin College in Ohio in 1967,
 where his interests included both physics and religion but left after
@@ -291,21 +292,27 @@
 
 When the project ended he moved back to the family home in Cambridge,
 and began taking classes at the Massachusetts Institute of Technology
-(MIT), with an interest in what was then knows as Social Inquiry, in
-particular the politics of high technology.  But in quickly became
+(MIT), with an interest in what was then known as Social Inquiry, in
+particular the politics of high technology.  But it quickly became
 clear to him that the understanding of computing that the social
-scientists were critiquing was not the computing that I knew as a
+scientists were critiquing was not the computing that he knew as a
 programmer, what he later came to refer to as "computing in the wild".
 He realised that he needed to get clear on what computing really is,
-so that I could legitimately critique it. He thought he had to go into
+so that he could legitimately critique it. He thought he had to go into
 the heart of the beast, as it were, so applied for the PhD program in
 Electrical Engineering and Computer Science at MIT and began taking
 classes.
 
-When the MIT administration discovered he didn't have an undergraduate
-degree, Patrick Winston, the newly-appointed head of the Artificial
-Intelligence Laboratory, gave Smith an informal oral exam in topics
-from the MIT undergraduate computer science curriculum and awarded him
-the credits necessary for a degree, clearing the way for his admission
-to the graduate program.
+When the MIT administration discovered Smith didn't have an
+undergraduate degree, Patrick Winston, the newly-appointed head of the
+Artificial Intelligence Laboratory, gave Smith an informal oral exam
+in topics from the MIT undergraduate computer science curriculum and
+awarded him the credits necessary for a degree, clearing the way for
+his admission to the graduate program.
 
+In 1977 Terry Winograd, who had left MIT to join the Computer Science
+Lab at the Xerox Palo Alto Research Center (PARC), invited Smith to
+spend the summer in the Understander Group there, where he joined the
+in the development of KRL, a Knowledge Representation Language, which
+came to embody some of the ideas that were developed in his Masters
+and PhD dissertations.