写作建议

1. 第一段

Nonetheless, every scientist has to find out that there will never be absolute security, randomness will always play a role, too. There is a science even about this randomness which tries to specify it and to keep it within certain limits.

词汇使用上要琢磨，比如，上面的语境中security和randomness是反义词，我们反问自己，这样对吗？

Nonetheless, every scientist has to find out that there will never be absolute certainty; in addition, randomness will always play a role. There is a science even about this randomness which tries to specify it and to keep it within certain limits.

2. 第二段

So, all in all science is the dream of understanding a real world, that is in itself not existing, because it unexceptionally depends on the perspective of the observer and can, therefore, never be absolutely certain and objective.

开头不要用and, but, so, because

Thus，science is the dream of understanding a real world that in itself does not exist, because it absolutely depends on the perspective of the observer. Science can, therefore, never be absolutely certain and objective.

参考文献

Tim Skern: 《Writing Scientific English: A Workbook》