Ah, yes...."But the truth remains the same.".... as people love to quote.

But there is always more to learn about 'the truth'. We just aren't cabale of knowing it as a child, nor in any present  phase of our human history. 
More means of discovering knowledge of what is true becomes available to us through scientific discoveries and through archaeology and means of Scripture interpretation.

If we don't grow in knowledge and understanding of what is true, we end up in ignorance.