The fatal flaw of religious evangelism

The fatal flaw of religious evangelism:
Evangelists constantly claim to know what is unknown to everyone including them, but they also blatantly LIE.
Here is a quick example I ran into just now:
http://biblicalgeology.net/blog/fatal-flaw-radioactive-dating/
(Claiming radioactive dating can yield any value because we don't know when the decay started...)

Here is how the "starting time" is actually known and therefore not any value (but specific values within a predictable margin of error) come out of radiocarbon analysis:
http://www.physlink.com/education/askexperts/ae403.cfm
(Cutting the story short: radiocarbon ratios are fairly constant in the atmosphere and animals and plants breathe it in indiscriminately. When the organism dies, it does not breathe anymore and the ratio starts dropping as at predictable rate, which due to its logarithmic pattern is exceedingly good for non recent events, and being it's precision dependent on the precision of the analysis process - and sample size.)

Now, biblical apologism, please crawl back to the middle ages you came from.