diff --git a/latex/presentations/midterm/sections/theoretical_background.tex b/latex/presentations/midterm/sections/theoretical_background.tex
index 4c4c976..b058c53 100644
--- a/latex/presentations/midterm/sections/theoretical_background.tex
+++ b/latex/presentations/midterm/sections/theoretical_background.tex
@@ -74,6 +74,7 @@
                 \begin{align*}
                     \gamma_i = \log\left( \frac{P\left( Y=y_i | C=0 \right) }{P\left( Y=y_i | C=1 \right) } \right)
                 \end{align*}
+                \todo{Why is ``the cost of decoding $\hat{y} = 1$'' a valid choice for an overall cost function?}
             \item LP Formulation:
                 \begin{align*}
                     &\text{minimize } \sum_{i=1}^{n} \gamma_i f_i, \hspace{5mm} f_i = \sum_{\boldsymbol{y}} \lambda_{\boldsymbol{y}}y_i\\