Speculative proposal for an expanding structure ...这里的“Speculative proposal”怎么理解?Speculative proposal for an expanding/contracting structure servicing trailers/caravans,designed for a society with a 2-3 day working week.来源archigram.westminster.ac.uk/project.php?id=81Speculative proposal for an expanding/contracting structure servicing trailers/caravans,designed for a society with a 2-3 day working week.- regulating struct[ure] cage- Pneumatic enclosur

Speculative proposal for an expanding structure ...这里的“Speculative proposal”怎么理解?
Speculative proposal for an expanding/contracting structure servicing trailers/caravans,designed for a society with a 2-3 day working week.
来源archigram.westminster.ac.uk/project.php?id=81
Speculative proposal for an expanding/contracting structure servicing trailers/caravans,designed for a society with a 2-3 day working week.- regulating struct[ure] cage
- Pneumatic enclosures
- Mobile appliance & service plant
- Movement systems – carveyor,moving pavements,legs
- Connect to “plug-in”
1.这里的“Speculative proposal”怎么理解？
2.这里的"Pneumatic enclosures"怎么理解？