-As I mentioned, the judicial principle suggests that the evidence we need can be obtained from a multiplicity of sources

- But the question for us is what is the appropriate process for gathering that evidence?

- This has two elements to it - gathering new evidence and collating existing evidence. I would like to speak about both

- With regard to gathering new evidence, one of the key approaches is research

- In conducting such research, one of the considerations that we have to keep in mind is what might be called "scientific rigor"