It is true that computers have brought great conveniences to our life. At certain times, especially when it is temporarily impossible for us to visit museums and art galleries in person, we can get a rough picture of what are on display on site. However, what we see from a computer screen is, after all, not exactly the same as what we see and feel with our own eyes on site.

由此我们可以得出结论：电脑永远不可能替代真实的博物馆和艺术画廊。因此，说不需要去博物馆和画廊了因为历史文物和艺术作品都可以通过电脑屏幕来欣赏了是荒谬的。

In conclusion, computers will never be able to replace real public museums and art galleries. Therefore, it is ridiculous to say that one does not need to go to museums and art galleries as historical objects and works of art can be appreciated on a computer screen.