 We're going to talk about renewable resources and resources come from nature, natural systems, ecosystems. We can think about clean air, clean water, healthy soil, fiber, food. And we want to make sure that we're not extracting materials faster than they can be replenished by nature. And we might like to even take a little break and let nature replenish the stocks up to kind of a maximum carrying capacity. And at which point, then it's nice to harvest at that high maximum harvestable rate without depleting our natural resources. So that takes a little time. I think farms and forests are a great example. We can think about you start with maybe an old degraded farm that's not doing much. There's really not an opportunity to harvest anything yet. And so we need to take a little break, take some time to restore the water and the nutrient cycles and get the ground cover and trees planted and then get a little bit of a thinning and nanogen for maybe 10 years or so. And still they get to a harvestable age and then we can take out a few posts maybe for fence posts and let the rest of the trees continue to grow. There's a lot of new opportunities to upcycle and make composite laminated timber, for example, out of smaller pieces of wood that can even be stronger. The wait 100 years for a great big old tree to just chop it down, we can, we can use lower value biomass and improve its quality. Of course, harvesting food is really important. And again, we don't want to be extracting too much from the soil and wear it out. We want to do sustainable agriculture and continue to grow healthy food and promote the water and nutrient cycles and balance with nature. So what is that rate of renewal? We like to think about the sunlight and the water cycles on an annual basis and to carefully not take off more than can be replenished within a year or two. In a few years, we might be able to harvest a little more for a good year. Some years we need to harvest less and so keeping that right balance and that harvesting at the rate of renewal, usually on an annual basis. Harvesting renewable resources needs to be done carefully and with nature in mind.