rewording

Author: JeremyPike

episodes/07-thresholding.md

@@ -357,7 +357,8 @@ but the outcome is that Otsu's method finds a threshold value between
 the two peaks of a grayscale histogram.
 Note there is a third peak very close to 1.0 which corresponds to the white label and disk on the 
 left hand side of the image. It would be a good idea to crop the image to remove these white pixels 
-before calculating the Otsu threshold but for now we will continue without doing this.
+before calculating the Otsu threshold. We will discuss how to do this later in the episode but for 
+now we will continue without removing them.
 
 The `ski.filters.threshold_otsu()` function can be used to determine
 the threshold automatically via Otsu's method.