 In sum, interest in the multiverse stems primarily from speculations about the consequences of inflation for the global structure of the universe. The main points of debate regard whether EI is a disaster for inflation, undermining the possibility of testing inflation at all, and how much predictions such as that for \(\Lambda\) lend credence to these  speculations.[57]  Resolution of these questions is needed to decide whether the multiverse can be tested in a stronger sense, going beyond the special cases (such as bubble collisions) that may provide more direct evidence.