diff --git a/papers/fmea_software_hardware/software_fmea.tex b/papers/fmea_software_hardware/software_fmea.tex
index 64afd94..4939de8 100644
--- a/papers/fmea_software_hardware/software_fmea.tex
+++ b/papers/fmea_software_hardware/software_fmea.tex
@@ -282,7 +282,7 @@ we have yet another layer of complication.
 %we need to re-think the 
 %FMEA concept of simply mapping a base component failure to a system level event.
 %
-SFMEA regard, in place of hardware components, the variables used by the programs to be their equivalent~\cite{procsfmea}.
+SFMEA regards, in place of hardware components, the variables used by the programs to be their equivalent~\cite{procsfmea}.
 The failure modes of these variables, are that they could become erroneously over-written, 
 calculated incorrectly (due to a mistake by the programmer, or a fault in the micro-processor it is running on), or
 external influences such as
@@ -697,7 +697,7 @@ SFMEA and HFMEA methodologies used to describe a failure mode model.
 %shows that by taking a 
 %modular approach for FMEA, i.e. FMMD, we can integrate
 Our model is described by four FMEA reports; and these % we can model the failure mode behaviour from
-model the system from four several perspectives.
+model the system from  several failure mode perspectives.
 %
 With traditional FMEA methods the reasoning~distance is large, because
 it stretches from the component failure mode to the top---or---system level failure.
@@ -718,11 +718,11 @@ it is very difficult to gauge cause and effect.
 For instance, hardware failures are not analysed in the context of how they will
 be handled (or missed) by the software. 
 %
-System outputs commanded from may not take into account particular
+System outputs commanded from software may not take into account particular
 hardware limitations etc.
 
 The interface FMEA does serve to provide a useful
-checklist to ensure conventions used by the hardware
+check-list to ensure data and synchronisation conventions used by the hardware
 and software are not mismatched.
 
 However, while these techniques ensure that the software and hardware is