Not entirely sure but seems wrong to me...
thanks,
Erik Rijkers
--- doc/src/sgml/parallel.sgml.orig 2016-10-01 19:45:57.315099655 +0200
+++ doc/src/sgml/parallel.sgml 2016-10-01 19:46:32.622854693 +0200
@@ -406,7 +406,7 @@
unsafe, because this would require predicting every operation which the
function could possibly perform. In general, this is equivalent to the
Halting Problem and therefore impossible. Even for simple functions
- where it conceivably be done, we do not try, since this would be expensive
+ where it could conceivably be done, we do not try, since this would be expensive
and error-prone. Instead, all user-defined functions are assumed to
be parallel unsafe unless otherwise marked. When using
<xref linkend="sql-createfunction"> or
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