RE:TrackingSporty, A square, invertible matrix "A" in the matrix equation Ax=b has only the unique solution. There's so many ways info is being embedded and transmitted out there. You could create vectors out of recipes in cookbooks and talk about making apple pies or cream puffs. I know how it works. So do the operators know how it works. I don't think they care much about operational info getting out. But geological info will be fiercely guarded. Very few will know that. So you're right. I take with a grain of salt anything that I read on these boards.