I've never paid any attention to the Ambient Occlusion setting on the Properties tab for lights. For doing realistic renders (hopefully without too many artifacts), is this something I should be using? I'm trying to understand whether this is something "artificial" that technically shouldn't be allowed by the other light settings if the brightness were realistic, or....?

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3