After hearing the lengthy tale, Daenerys was deep in thought. If she wanted to reclaim the Iron Throne, she had to know more. More about history, more about the Houses and politics and even westerosi customs. She couldn't go blind as she did in Slaver's Bay. True, Westeros was conquered by three dragons and a few thousand men before, but Aegon had Rhaenys and Visenya at his side, while she was alone. But before the Conquest, there was also no bad blood between House Targaryen and other Houses. Despite his great love for wine, Tyrion Lannister was well educated. And she also had Archmaester Marwyn with her. He was knowledgeable on many more topics, other than the higher mysteries.