Ok, but DT1 changes from time to time, so in that case, would my trust change accordingly? If I had a neutral feedback from user X who is on DT1, but he then got removed from DT1, would I miss the feedback from my profile?
Yes. Example from my own experience: my feedback changes a bit every month because changes in DT1 cause changes in DT2.
I thought that changes in DT1 will change those who are on the default trust lists, but changes to DT1 does not change our own personal trust lists or even the trust list of others because those one our trust list stay the same and those on other trust lists stay the same, absent manual changes, and the personal trust lists are not changed by members very frequently.
So if we have our trust lists set to level 2, then everyone on our trust list is level 1 and then everyone on our level 1 has their own level 1s, which would be our level 2, so in other words our trust would not be affected by changes in DT1, only by our changing our trust list or those on our trust list changing their level 1s.
Sure, I think that we may have several members who either don't have a trust list (so then their trust list would be default trust) or they purposefully include default trust on their trust list, so then the fact that default trust is within the trust lists of some members would therefore end up affecting the trust that shows for the members. I used to have default trust on mine but I changed that, even though I am pretty sure that several members who I trust have default trust on their trust list.
I am not 100% sure about the accuracy of what I am saying, so I guess I am asking rather than stating definitively.