VCs and angels invest in multiple startups all the time with the belief that 1 out of 20 investments (rough statistics) would probably give them a run for their money. What this means is that roughly 19 out of 20 startups are destined to fail. So what is happening here is that the investors are betting on multiple startups to play safe, BUT, the startup founders are putting their soul on one startup (at a time), which statistically, has a very slim 1/20 chance of bearing fruit.
It's a general belief that Entrepreneurship is about "jumping from a cliff and assembling a plane on the way down", but if probability and statistics make any sense, that is too much risk to take. Not just the number of years, but personal relations, psychological effect of failing continuously, health etc.
So... do you think it's a good idea to get involved in multiple startups ideas simultaneously? Have your say.
It's not a terrible idea to work on a few projects simultaneously, but you should focus on one when/if it shows promise. Also keep in mind that building a successful startup isn't just a statistical game in which 1 out of every 100 startups necessarily succeeds. As in, a startup might only succeed because the founders put in the extra work.