Board Thread:Questions and Answers/@comment-109.128.29.166-20150430124057/@comment-26154973-20150511064856

^ this.

But seriously, those statistics are whatever it is, just ratios computed from many reports (like thousands) from many people, just to show what to expect and what is considered "normal". If you unlucky with a particular recipe, then it is not "normal", either because there is some reason for that (which we don't know) or just by chance. But while you unlucky with this recipe you may as well be experiencing "normal" rates with other things (other construction & development recipes, drops, hits, etc.). Basically, many people has/have something like that (miserably unable to get a ship they want, for example), subjectively or objectively (like in your case).