tighten wording for why-openpgp section

1 files changed, 3 insertions, 3 deletions

diff --git a/sq-guide.md b/sq-guide.md
index 62161a7..c89df76 100644
--- a/sq-guide.md
+++ b/sq-guide.md
@@ -97,13 +97,13 @@ Cryptography is used for several reasons:
 
 * to keep private things private
 * to make sure data hasn't been changed
-* to make sure who communication comes from
+* to make sure from whom communication comes from
 
 The OpenPGP standard provides for all these use cases, as well as
-provides protocols and data formats for managing the ecosystem of
+providing protocols and data formats for managing the ecosystem of
 OpenPGP users. The standard specifies, for example, what form
 cryptographic messages take. This allows different parties in a
-communication can use different programs. For example, one might be
+communication can use different programs. One correspondent might be
 using a laptop computer, and while another uses a mobile phone. The
 software running on those will be radically different, but as long as
 they follow the same standard, secure communication is no problem.