Architect Archive

I have furniture 2 and installations 2. I'm coming up on another 40k XP, so I have to decide soon where to spend next. But I need info on theexperimentation issue before I can decide. I'm not looking for general advice on where to advance, so if you can't answer the specific questions, then move along

Three questions:

1) How much does your experimentation chance improve with the first box of Construction? It's like +10 if I recall correctly, but how does this translate to percentages? Right now, with no construction boxes, I around a 50% chance of failure, so I don't bother. Can anyone tell me what their numbers are like as they go up through the branch?

2) Does experimentation in architecture do any good anyway? What good is increased durability on your structure modules? Are my houses going to last longer?

3) Unrelated to experimentation, what effect do "complexity" skill-enhancements do for me? I know someone who has a pair of Tuskan Raider boots that have a +3 complexity bonus. He also has a skill enhancement item that could be plugged into anything that gives a 2 bonus to complexity.

What do these do though? Do they reduce the complexity of items you create? Or maybe they reduce the complexity you get through multiple experimentation? Since higher complexity results in higher insurance costs, I suppose it's good to have a lower number.