Why can't information be transmitted as easily from one brain to another like a computer if it is just a bunch of electrical signals?

Barring any obvious reasons such as the inability to physical "hook-up" two brains, the problem here is perception. For example, my perception of the color red may trigger a completely different set of neurons compared to others. The real problem is that my perception of red is different from everyone else's due to the differences in experiences that make up the color red for me. The point to this question is realizing that although the brain is a set of electrical and chemical impulses, there is no single set of pathways that everyone works off of, much like a personal computer.

What would you do with $100,000 in today's markets?

There is no right answer to this, but there are definitely some wrong ones. An obvious incorrect answer would be to hold onto the money in cash. A less egregious answer would be to put it in savings, where you are seeing a .01% annual interest rate. CD's are better off, but hovering around .3% for a year and slightly less than a percent for 5 years. Bonds are yielding all time lows due to the flight to safety and Stocks are currently at all time highs. One way to approach this question would be to look at individual securities and make a point in why they are undervalued or see potential for growth. Narrowing down from security, Industry, sector, all the way down to individual company would give a few good answers. What I would look for is the process of thinking.

How would you solve 3^x^2 = 9^(4x) + 6?

Trying to solve it normally would be an arduous task, but just thinking about the possible solutions would be much easier. First, simplify to the following: 3^x^2 = 3^(8x) + 6. If we ignore the "+6" (since we are looking at incredibly large numbers where "+6" will not make much of a difference) we see that x^2 = 8x. An obvious answer is 8. The "+6" is definitely going to matter, but maybe after more than 10 zeros after the decimal point. Graphing the equation also shows us that an answer is indeed close to 8. The second solution of something close to -1 can also be seen in the same manner!