--- a/doc/v2_planning/dataset.txt	Tue Sep 14 09:01:16 2010 -0400
+++ b/doc/v2_planning/dataset.txt	Tue Sep 14 09:08:11 2010 -0400
@@ -357,3 +357,10 @@
 dataset is just a different class. But I'm happy to have all this GPU stuff
 send to the learner as well if everybody else believe that is better. 
 
+FB comment: I don't understand why you would need to recompile the theano function.
+Their is 2 cases, the data is in a shared variable. You can directly change the data
+in the shared variable without recompiling the theano fct. The second case is when 
+the dataset is in an ordinary theano variable. In that case, the first step in the 
+theano fct will be to transfer the dataset to the gpu before computation. If the data
+change at each call, that will be as efficient as changing the data manually every time
+in the shared variable.