Young man, I must mention that the coolant conductors in the thermonuclear reactor are not really suitable for climbing; their structural integrity is just 346 over 9. If you must use this delicate piece of machinery for ascension, use the illumination ducts. Those are the green cables, not the yellow ones.
You are the best in your field of technology. Define a field of study; it must be fairly narrow. Nuclear physics and rocket science are both good examples. Within this narrow field, you are an absolute genius. You automatically make any knowledge rolls, and have a bonus die on appropriate gageteering rolls using FixIt. If you advise someone else (a 3-shot action in combat), and your field of study is somehow applicable (fairly spoofy reasons are acceptable), you give him a free bonus die on his Action Total.
You can also make truly new and revolutionary designs in your field of experience. In genres where a type of craft are very important, such as Crimson Skies or mecha campaigns, this schtick helps you to create new designs and to push the envelope on technology.
This schtick is similar to Loremaster and ArcanotechScientist.