What do souls do in the spirit world?

The laboratories of the world of spirit are many decades in advance of those of the earth plane. 

In the hall of science, every field of scientific and engineering investigation, study and discovery is covered, and here are to be seen so many of those (wo)men whose names have become household words, and who since passing into spirit have continued their life's work with their fellow scientists with the full and immense resources of the spirit world at their command.

Here they can solve those mysteries that baffled them when they were on earth. 

There is no longer any such thing as personal rivalry. Reputations have no more to be made and the many material handicaps are abandoned forever. It follows that where such a gathering of savants can exist together with their unlimited resources, the results must be correspondingly great. In the past ages, all the epoch-making discoveries have come from the spirit world. Of himself, incarnate man can do very little. And our own spirit scientists can and do impress their earthly colleagues with the fruits of their investigation. In many cases where two men are working upon the same problem, the one who is in spirit will be far ahead of his confrere who is still on earth. 

A hint from the former is very often enough to set the latter upon the right track and the result is a discovery for the benefit of humanity.

Every one of them that is sent from the spirit world is for the advantage and spiritual progression of man. If perverted minds use those same things for the destruction of man, then man has only himself to blame.

When man exercises his will in the right direction, there will be no end to the enormous rewards that he will gain in material progress, but material progress must go hand in hand with spiritual progress.

And until they do, the earth world will not be permitted to have the many inventions that are ready and waiting to be sent through.