On my eighth birthday, Dad bought me an accordion(手风琴） and said excitedly, "Once you learn to play, it'll stay with you for life." But I didn't want to play it. Ijust wanted to play games, But Dad asked me to take accordion lessons.
    One day, I found a box in a corner. When I opened it, I saw a beautiful violin. "You're your father's," Mum said. "His parents bought it for him. I guess he got too busy on the farm to learn to play it."
     I had to practice half an hour every day, and every day I tried to get out of it. But Dad didn't allow. I asked why. He answered, "Because you can bring people joy. You can touch their hearts." He added softly, "Someday you'll have the chance I never had: you'll play beautiful music for your family. And you'll understand why you've worked so hard." I was speechless.
    The lessons stopped after I finished high school. When I grew up, I got married and moved into a new house. I put the accordion in the attic（阁楼）.
    One afternoon, my two children found the accordion by accident (偶然). They got very excited. "Play it. Play it," they laughed and said. I started to play some simple songs. I was surprised I could still remember them. Soon the kids were dancing. Even my wife was laughing and clapping to the beat.
    At that moment, my father's words came back to me, "Someday you'll have the chance I never had. And you'll understand." I finally knew why Dad had asked me to practice hard. Dad never learnt to play his violin. But I told my family, "This is my father's music."

《创新中国》在网上征集：如何对服装品牌进行创新？网友的看法主要有以下两种。

看法一：服装品牌，需要继承和创新。创新服装品牌，必须继承民族精神和文化，承载现代气息和流行元素，凸现以人为本的心理需求，适应中国乃至世界服装文化欣赏的需求。这就需要百折不挠地追求、探索和创新。

看法二；中国是一个纺织大国，但是庞大的纺织品出口却赚不到更多的外汇，这是令人头疼的事。其根本原因在于缺少品牌优势。大力发展品牌符合市场规律，也符合国家利益。

结合所学哲学知识回答：上述材料是如何体现辩证否定观的？