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ISAAC SAMUEL KOHANE: Also, I forgot to mention at this point, the output of microarray studies is foreign to basic biology researchers. They're used to looking at three or four or five or 20 numbers and performing some easy analysis in an Excel spreadsheet. But the point-- or doing a BLAST of one gene at a time. But the data from these microarrays does not easily load into standard tools. The analysis is non-standard. Excel does not cut it. Excel can barely load some of these data sets. And so all this is actually representing an interesting turn. So this is the other point of view, which is now that the standard biologist tools are no longer fitting nicely onto the desktop productivity suite that they previously had. And this is, in some way, a full circle. It used to be, of course, that computers were run by the high priests in the computer center. And not only that were they-- did they know about how to boot-up the computer and to make the computer do whatever it d...

This is also written in the form, it's the k that's on the right hand side. Actually, I found that source is of considerable difficulty. And, in general, it is. For these, the temperature concentration model, it's natural to have the k on the right-hand side, and to separate out the (q)e as part of it. Another model for which that's true is mixing, as I think I will show you on Monday. On the other hand, there are some common first-order models for which it's not a natural way to separate things out. Examples would be the RC circuit, radioactive decay, stuff like that. So, this is not a universal utility. But I thought that that form of writing it was a sufficient utility to make a special case, and I emphasize it very heavily in the nodes. Let's look at the equation. And, this form will be good enough, the y prime. When you solve it, let me remind you how the solutions look, because that explains the terminology. The solution looks like, after you...

PROFESSOR: OK. Let me also remind you that we slightly changed the schedule for next week. On one of the older schedules, Tuesday appears as a lab date, but it's actually Thursday. So Tuesday will be a regular lecture here and Thursday will be the lab. And for the lab, we meet in 1115. That's on the handout for the first day. Also, if you're not registered for class, you don't have automatic access to Stellar, the website. So we can manually add you, but you'll have to let us know. Just send an email to Professor [? Marzari ?] and myself. And even better is if you send an email to both of us. And then we'll manually add that. And we'll put links there to things like articles and things that may have restricted access, copies of the lecture notes, things like that will appear there. OK. So what I want to go do is go back to their potential models. And what we're going to do today, is talk a little more in detail about the sort of formal or c...