This observation appears highly relevant and important.
The second difficulty may be met, though not, I must admit, in a particularly convincing manner, by supposing that the four-dimensional vehicle is so mobile and plastic, in respect to appropriate forces, that it is capable of being moulded by the mere power of will.
It would thus take the form which the agent commonly associated with himself, or which he observed his physical body to have after he had left it.
It would be possible to adduce a number of considerations in support of this view, but none of them are in any way conclusive and I therefore leave the reader to form his own opinion on the matter.
As regards the third point, there are two possible answers which might be offered.
On the one hand it might be suggested that the words heard are really objective; the result, that is to say of actual vibrations in the atmosphere, and that this result is produced because, in all such cases, the percipient is sufficiently mediumistic to provide the necessary material for the agent to "work up" some form of speaking apparatus. This is very difficult to conceive as possible, and yet we must suppose some such process to be involved in the production of the "Direct Voice," a phenomenon which, though baffling, seems well authenticated.
But this is rendered improbable by the cases where the speaking agent has been a living person, who records no such process as having taken place.
Besides, it is grossly improbable that a living person, or for that matter a newly 'dead' person, would know how to perform this operation.
The most probable explanation seems to be a combination of telepathic communication between the agent and the percipient accompanied by an auditory hallucination on the part of the latter. This would be, I think, quite natural.