Rework disclaimer

main.tex

@@ -94,15 +94,16 @@ in a fashion which is compatible with our inference machinery called NIFTy.
   temperature, flux, etc.) which are defined on a continuous space (like time,
   space, frequency/energy of electromagnetic radiation). If you've got data,
   which tells you something about such a field, keep on reading. If not, you may
-  use IFT and NIFTy as well but perhaps there are other methods available to you
-  which fit your needs better.
+  use IFT and NIFTy as well but perhaps there are other methods available which
+  fit your needs better.
 \item The explanations below shall be pretty general in order to be applicable
-  to a variety of problems. However, there is some probability that your
-  \texttt{R} (will be defined below) is just a linear function. In this case
+  to a variety of problems. Therefore, the text might be difficult to understand
+  in its full generality. However, it is not unlikely that your \texttt{R}
+  (which will be defined below) is just a linear function. In this case
   everything becomes very simple, since the derivative of a linear function is
   just the function itself. Then only \texttt{R(s)} and \texttt{R\_adjoint(d)}
-  need to be implemented. You do not need to understand what I mean already at
-  this point. Just feel lucky and relax. You may relax anyways.
+  need to be implemented. You do not need to understand what I'm saying already
+  at this point. Just feel lucky and relax. You may relax anyways.
 \item Read the full guide before you start to implement something.
 \end{itemize}