I was hoping somebody might be able to answer this question. The JWST seems very delicate. Is NASA planning to open and test it in low Earth orbit before sending it to that Lagrangian point 4 times the distance of the Moon? I can imagine something might jam and not open so that it might be nice to deal with these problems closer to Earth. On the other hand, I can imagine it might be too delicate to move to the Lagrangian point after it is opened-up.