diff --git a/user-doc/tutorials/a-trieste-4.txt b/user-doc/tutorials/a-trieste-4.txt
index 73308bbb40ec9c22894829b19115fa49b117ee47..01704caf1b216953e814d6069f6d14a170bde5c8 100644
--- a/user-doc/tutorials/a-trieste-4.txt
+++ b/user-doc/tutorials/a-trieste-4.txt
@@ -440,6 +440,12 @@ To complete this exercize, you should do the following:
 What can we learn from this analysis about the convergence of the two metadynamics simulations
 and the quality of the collective variables chosen?
 
+At this time, the most important question of this lecture becomes:
+
+- Could we distinguish the different behavior (in terms of convergence) of the simulations in Exercize 1 and 2
+simply by looking at the time series of the Gaussian height?
+
+
 \section trieste-4-conclusions Conclusions
 
 In summary, in this tutorial you should have learned how to use PLUMED to: