questions for debate #1

Question for Kant
Since the explosion from Spain, Jews have began to see themselves more ethnically Jewish rather than religiously Jewish. With this in mind, it is possible for these ethnic Jews to only follow part of the Talmud. If this is true, why cant these Jews replace the unpracticed Talmud information with enlightenment thoughts and ideas?

Question for Mendelssohn
 If you claim that judaism and enlightenment can co-exist, then why hasn't there been enlightenment thoughts on the Jewish religion thus far? What is inhibiting them?