The existence of God

[Jehanne]

And so if the constants were different, we would not have life and nobody would be around to observe that case.

There are lots of alternative possibilities. Here are a few.

1.There is a multiverse with a lot of universes, each of which has its own set of constants and where every possible combination of constants appears in some universe.

In this case, a very small proportion of the universes will have life, but ALL observations by living things will comes from such universes.

2. The constants change from place to place in *our* universe with all the possible combinations happening somewhere. Once again, the part of our universe with constants allowing for life would be very small, but all observations would come from such locations within our universe.

3. The constants vary and their values are pushed by natural laws in a direction promoting complexity. if this happens, the complexity associated with the production of the elements necessary for life and then of life itself would be automatic.

This sounds like making up any conceivable ad hoc scenario to avoid acknowledging the universe is designed.

1. The multiverse hypothesis is almost unfalsifiable, and there is zero empirical evidence to back it up.

2. This can be said whether the universe is designed or not. Some designed artifact like robots can "say" the same thing about humans, all their observations only come from locations where they exist and where humans designed them.

3. Again, irrelevant. A theist can happily argue with you that God made the universe in such a way that complexity increases with time and life eventually arises.

A multiverse is a naturalistic explanation. As far as falsifiability, yes, at present, it is, and may forever be so, unfalsifiable. On the other hand, maybe some clever researcher will propose an experiment and/or observation to test it.

As for theism, you can start with any conclusion that you want and argue backwards to God as being the ultimate cause.