• One problem which the experiment suffered from was its rather monotonous nature.
• The subjects did not always follow the instructions provided probably because they did not notice them changing.

As a result, some users keyed in somewhat inappropriate data. If such data is disregarded we expect that much more coherent results would have been obtained.

One effect we noticed was that the final position of the LO seems to be affected by the position where the LO was initially placed. In a single suite of tests mixing up the initial position of the LO might have caused certain discrepancies that we observed.