Sven Magnussen:
In reply to Lieutenant Daphne Arslan (msg # 86):
08:45, Today: Sven Magnussen rolled 70 using 1d100. sensors.
I don't know how to read or modify yet. Int. is 55 so I failed?
Unless you have 15+ on Helmsman or Engineering, I suppose? And you don't :P since the most we have right now is 0 (as in, non-negative).
Now, if I'm reading the manual right, you can spend 1 point of Destiny to upgrade your result by 1 degree: bump critical failure to normal failure, normal failure to success, or success to critical success. I don't know how many Destiny point you have (I have 2) or how/when do they refresh, but I don't think it's such a crucial moment that we should be spending them yet.
Unless we think we'll be refreshing them soon-ish, in which case why the hell not use them, I suppose. But this is guesswork.