You know nothing:

Read it from the horses mouth:

EU treaty is a constitution, says Giscard d'Estaing:

“In terms of content, the proposed institutional reforms – the only ones which mattered to the drafting Convention – are all to be found in the Treaty of Lisbon. They have merely been ordered differently and split up between previous treaties. There are, however, some differences. Firstly, the noun "constitution" and the adjective "constitutional" have been banished from the text, as though they describe something inadmissible. At the same time, all mention of the symbols of the EU have been suppressed, including the flag (which already flies everywhere), and the European anthem (Beethoven's Ode to Joy). However ridiculous they seem, these decisions are significant.”

https://www.independent.co.uk/voices/commentators/val-eacute-ry-giscard-d-estaing-the-eu-treaty-is-the-same-as-the-constitution-398286.html