2006-09-28 08:44:00 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Scientists change theories when the predictions of the new theory better mach the results of experiments. Also, to be considered, a new theory should be able to make a prediction that the old theory couldn't.
2006-09-28 08:48:44 · answer #1 · answered by Michael E 2 · 1⤊ 0⤋
Scientists are just like you and me... they're human. Humans make mistakes. We can only go by what we currently know and/or the evidence we have before us. When something is uncovered or new evidence is found, that could change existing theories...
2006-09-28 08:52:35 · answer #2 · answered by isong 1 · 0⤊ 0⤋
I'll take a stab of a guess: Maybe because the facts that come to light prove, or disprove, the current theory. If it's disproven, then they'd have to change the theory to make it viable again.
2006-09-28 08:47:45 · answer #3 · answered by Shadow 7 · 1⤊ 0⤋
Because they might havee new information they did not hav e before, like pictures of the earth from a satellite
2006-09-28 08:52:01 · answer #4 · answered by pinacoladasundae 3 · 0⤊ 0⤋
when new evidence/discoveries turn up, they'd have to take those new facts into account. Thus theories change over time.
2006-09-28 08:51:39 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Because they've gathered data that either disprove their original theory or suggest an alternative one.
2006-09-28 08:52:03 · answer #6 · answered by mockingbird 7 · 0⤊ 0⤋
Evidence
The only constant is change
change
2006-09-28 08:45:40 · answer #7 · answered by Sara 5 · 1⤊ 0⤋
New or better evidence, better methods or equipment, inaccuracies discovered.
2006-09-28 08:46:56 · answer #8 · answered by Rockvillerich 5 · 1⤊ 0⤋
To improve them.
2006-09-28 08:51:45 · answer #9 · answered by Glune 3 · 0⤊ 0⤋
For every truth there is a million lies!
2006-09-28 08:51:43 · answer #10 · answered by Mannyd101 2 · 0⤊ 0⤋