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around yevgeny prigozhin and his army of mercenaries who were until now believed to be exiled to belarus after the armed revolt in russia. keir simmons is in belarus. according to belarus's president, this is not the case after all. bring us up to speed here. >> reporter: well, that's right. there are two things happening right now. kind of twin track, if you like. one what we heard today. nbc news was one of the few international news organizations invited to the presidential palace in belarus. we have heard from the president of belarus. the other is those images that you showed of...

Hospitals. we test more, we can give people an understanding ofg what may be causing them to have the symptoms, maybe it's rsv. we think we're dramatically under estimating the burden of disease with this virus. it's going to help in terms of awareness, building the vaccination campaign, especially in this era of misinformation and vaccine hesitancy. testing is vital to build awareness, but it's also going to be helpful when it comes to understanding who needs maybe eyes on, who might need to be hospitalized. it's always important to understand what you're dealing with here. that testing piece...

And it's about not assuming that you know everything and that you actually ask your customers and see, you know, what their experience is, what they think about. >> it strikes me that sometimes you might see an effect and attribute it to the wrong cause. you have to be careful about that when you have this kind of philosophy. >> i'm hearing a lot from people who are actually doing this whole idea of testing rather than writing a business plan. so i just interviewed some very successful entrepreneurs who started a company called rent the runway. they think business plans are a waste of time. th...

Seeing what their experiences are. >> it strikes me you might see an effect and attribute it to the wrong cause. you have to be careful it when you have this kind of philosophy. >> they're doing this kind of testing rather than writing a business plan so i interview very successful entrepreneurs. they think business plans or the way. they believe in testing, testing, testing. they would have focus groups to test the demographics. i don't think you should throw the business plan out the window. i think you should still have it, but i think this is a very smart approach. >> is there a point wher...

Started a company called rent the runway. they think business plans are a waste of time. they believe in just testing. they would have focus groups to test their demographic, what their pricing would be. i don't think you should throw the business plan out the window. i think you should still have that. i think this is a very smart approach. >> can you test too much? >> you can. then you never launch anything and you become in limbo. what i would say about the whole question about the testing piece is that i do think that some people in terms of the business plan, should think about brand orde...