The age of the Universe is usually understood as the duration of the current stage of its development, which began with the Big Bang 10 – 20 billion years ago. However, there is an assumption that in the Universe, besides the forces of universal gravitation, there are also repulsive forces. Due to the action of the latter, a quasi-static phase could occur in the expansion, when the forces of gravity were compensated by the forces of repulsion. The duration of such a phase could be 50 billion years.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.