Double the number, and increment the units.
Therefore, if the developer estimates 3 weeks, then it will really take 6 months.
Many startups dream of getting purchased by the big companies like Yahoo and AOL. They will be around FOREVER!
If your startup gets purchased for a few billion or a few million, just cash out immediately, so even if the acquirer's stock goes to 0 in a few years, you already have money in the bank.
Riches cover a multitude of woes. -- Menander