otherwise you cannot do it. So fine. Number two is that you need to have a bachelor's. Unless you're getting an honorary degree. We're not talking about honorary degree. If you said, aren't PhD, you need to have a bachelor's. So which bachelor's? I do not know. It could be in political science. It could be in hydrology, it could be in computer science, does not matter. But you need to have a bachelor, you need to have funding, you need to have a topic, all kinds of things will be needed. And then of course you have to pass the qualifying exam, a department has different requirements, you have to take these scores, that course. Those are I'll call those situational conditions. If first to enabling conditions are not there, you'll not get it. But just because you have those first two doesn't, will that mean that you'll get PhD? No. So that's what the difference is. So when you're thinking about this till you think along those lines, so these are not necessary and sufficient conditions. I'm not telling you what will be necessary to get a PhD. What will be sufficient to get a PhD? What I'm just telling you is that you need these to enabling conditions, then you need many, many situational conditions and those situational conditions are context dependent. It will depend whether it is at MIT or TAPSs or somewhere else or you're in engineering versus in urban planning. They have different requirements. But then what is the difference between a necessary condition and enabling condition? Oh no