Assertion: scheme | /r/CapableOf | start in 1970
Facets:
value: as an attempt
type: MANNER
Source sentences:
text: Scheme started in the 1970s as an attempt to understand Carl Hewitt's Actor model, for which purpose Steele and Sussman wrote a "tiny Lisp interpreter" using Maclisp and then "added mechanisms for creating actors and sending messages".