On 21 Nov 2016 at 19:58, Richard Aiken wrote:

>
> On Mon, Nov 21, 2016 at 6:23 PM, Tim <xxxxxx@little-possums.net> wrote:
>     After that, they would
>     need to test in a wider variety of conditions to rule out other
>     possibilities such as local interaction with Earth's magnetic
>     field.
>
> But if the effect is due to interaction with a weak magnetic field,
> couldn't it still work, by purposely including a permanent magnet in
> the device?

No, because the magnet would be *attached* to the drive. Earth's
magnetic field is attached to the planet, and the drive would be
moving relative to that.

Sort of the difference between pulling yourself up into a tree with a
rope attached to the tree, and trying to pull yourself into the air
with a rope attached to you (and not attached to the tree)
.
--
Leonard Erickson (aka shadow)
shadow at shadowgard dot com