Weeeeelllll, not really as simple as that.
The pound did experience a "flash crash" on thin trading but has bounced back today. But notwithstanding that we're seeing something of a global currency crisis at the moment with almost everything crashing versus the dollar, the Euro hit a 20-year low.
There's a lot of gloom on the world markets, literally everywhere, for a variety of reasons. And just because the dollar is doing well doesn't mean that people are bullish about the US which is in recession.
The next couple of years are going to be really ugly in the global economy. There's every chance that Germany, and therefore mainland Europe, economy collapses this winter; China's economy is in dire straits with their demographic time bomb exploding, their competitiveness being eroded and a cult of personality around their leader; there's very little good news anywhere