If 'Except for its origin, in the British Interplanetary Society Journal, space warp has been restricted to fictional use.' is true, does it logically mean that 'There was a lot of secret use of the space warp. ' also is?
Except for its origin, in the British Interplanetary Society Journal, space warp has been restricted to fictional use.###There was a lot of secret use of the space warp. 