Serendipity,the very term is not allowed to be favorite for any PhD student...there should be some sequential, logical and scientific events for any discoveries which inhibit serendipity to exist. But surprisingly serendipity was behind many major findings. The most common is the apple story of Newton. I consider serendipity as a strong will that makes things happen - it may or may not be the way you want !! Imagine your own research, where you want certain things to establish which are already in your mind. Unconsciously, you have started believing your views very strongly but may be in some point you are not able to connect two things together. And suddenly out of the blue you get something else beyond your expectations. Now comes the happiest and toughest job to accept that and express your serendipity in a logical way. Serendipity serves as a bridge between your long nurtured believes and the best possible reason to support that. Research is all about possibilities and Serendipity is the ultimate one.