Ummm, it's more like, saying, I had one wife 8 weeks ago, and 4 7 weeks ago, and 16 6 weeks ago, and 64 5 weeks ago, and 256 4 weeks ago, and 1024 4 weeks ago and 4096 3 weeks ago, and 16384 2 weeks ago, and 65536 1 week ago, and I have 262144 today, so in 4 weeks I will have 16777216 wives.
That is, there is more than a single data point supporting the claims of exponential growth. There are lots of them.
Nice try though.