Answer:
Knowledge, like milk, has an expiry date. That’s the key message behind Samuel Arbesman’s excellent new book The Half-life of Facts: Why Everything We Know Has an Expiration Date.
We’re bombarded with studies that seemingly prove this or that. Caffeine is good for you one day and bad for you the next. What we think we know and understand about the world is constantly changing. Nothing is immune. While big ideas are overturned infrequently, little ideas churn regularly.
As scientific knowledge grows, we end up rethinking old knowledge. Abresman calls this “a churning of knowledge.” But understanding that facts change (and how they change) helps us cope in a world of constant uncertainty. We can never be too sure of what we know.
Explanation:
 
        
             
        
        
        
Through a beautiful courtyard.
        
             
        
        
        
The national junior honor society induction ceremony is a formal event where students who have met the criteria of the honor society are sworn in as official members of the society. students must meet academic standards and complete service work to be eligible for induction at the ceremony
        
             
        
        
        
The sentence has been changed to an indirect speech as follows:
- Ram denied telling Sita not to forget it.
<h3>What is an Indirect Speech?</h3>
In simple terms, an indirect speech means a reported speech. When reporting a speech, the words are framed to be in the past tense because it is assumed that the events happened in the past. 
So, when incorporating the verb denied, the provided sentence can be rephrased as shown above.
Learn more about the indirect speech here:
brainly.com/question/15886943
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