Both the tonsils & appendix organs have important function as modern day biologists begrudgingly now admit.
Begrudgingly? Why begrudgingly?
And who are these biologists who felt so bitterly defeated?
Whoever they are, they couldn't know much about Evolution.
Otherwise, they would know about homology
. That is a pattern in which:
1. A species changes its lifestyle.
2. The species continues to inherit an organ which was either of use only in its old lifestyle.
3. The species finds an alternate use for that organ.
(cf. Pagel 2002: 1131-1133 quoted in Cartwright & Theobald 2003)
This is nothing new. Darwin wrote in Origin of Species
( 1979: 428): "An organ rendered, during changed habits of life, useless or injurious for one purpose, might easily be modified and used for another purpose."
Creationists try to shock us with stories of alternate uses of vestigial organs, but usually we already know about it. In a debate with Fezer (1993b), Gish spoke about the pelvic bone of the whale. Evolutionists contend that the bone was inherited from the whale's land-dwelling ancestors. According to Gish, "it is not vestigial, it is functional," because the bone us used for reproductive purposes. It so happens that Gingerich et al. (1990) said the same thing three years earlier.
There are other examples also. Penguins no longer use their wings to fly, but now use them for underwater swimming (Wikipedia 2008). The inner ear for the Mammal Order is derived from the jaw for the Reptile Order (De Beer (1971: 7).
We can even have a chain of homologies. Pectoral fins for the fish changed to forelimbs of amphibians which in turn changed to human arms (De Beer 1971: 8). To put it figuratively, life hands the species a lemon and they make lemonade.
Some species aren't so lucky. According to Sutera (2001), some whale species carry ear flaps which they inherited from their land-dwelling ancestors. As far as we know, they only get in the way when they try to swim in the water.
It's difficult to prove a negative, so we don't know that such whales can't find another use for their ear flaps. I hope they do.
Cartwright, R. A. & Theobald, D. L. 2003. Citing Scadding (1981) and misunderstanding vestigiality: Another example of poor Creationist scholarship.http://www.talkorigi...s/scadding.html
Darwin, C. R. (Leakey, R. E., ed.).  1979. The Illustrated Origin of Species
. London: Faber and Faber.
Fezer, K. D. 1993b. Creation's incredible witness: Duane T. Gish, Ph. D. Creation/Evolution
13, 2: 5-21.
Gingerich, P. D.; Holly Smith, B.; & Simons, E. L. 1990. Hind limbs of Eocene Basilosaurus
: Evidence of feet in whales. Science
Pagel, M., ed. 2002. Encyclopedia of evolution
. New York: Oxford University Press.
Sutera, R. 2001. The origin of whales and the power of independent evidence. http://www.talkorigi...eatures/whales/
Wikipedia. 2008. Vestigiality. http://en.wikipedia.org/wiki/Vestigial