 Okay, we actually had a really good question after we killed the video last time about major and minor resonance contributors. So we can address that by remembering our lecture about equivalent and non-equivalent resonance forms. So when we have equivalent resonance forms, we have something like where we, the system that we have with the acetate anion, where the negative charge can be shown to be on one oxygen or on the other oxygen. Okay, remember we're just showing the motion of the lone pair of pi electrons, where as if we compare that to the conjugate base of acetone, the acetone in light, we could either show the negative charge being on the carbon or the oxygen. So if you recall, right, we said that the charge would, we would prefer to write the charge in any of our structural formulas to be on the more electronegative or the hetero atom. So when we look at the two non-equivalent forms here, right, we have one on carbon and one on oxygen. So since we have the negative charge on the hetero atom, and here we have the negative charge on the carbon, we actually don't get an equivalent charge distribution of the resonance hybrid. So in other words, when we look at the hybrid, we don't get the same charge distribution as we do here with negative one-half here and negative one-half here. We don't get that, we get, um, so this would be less than negative one-half and this one would be more than negative one-half. And you don't have to figure out how much more or how much less, okay? You just have to know qualitatively so you can identify the two resonance contributors as being major or minor. So in other words, these two are equivalent, right, because they give you a negative half and a negative half. But here, right, this is going to be the minor resonance contributor and this is going to be the major resonance contributor, okay? Any questions on resonance contribution, now that we've talked about that, when we have non-equivalent resonance forms? Okay, so that, uh, pretty much answered your question, I bet.