That's a fascinating question! It's true that both a quadrillion transistors and the number of neurons in a human brain are incredibly large numbers, but they are not approximately the same.

Here's a breakdown:

* Transistors: A quadrillion (1,000,000,000,000,000) is a huge number, but it's still significantly smaller than the estimated number of transistors in the most advanced microprocessors today. For example, the AMD Ryzen 7950X3D, a top-of-the-line CPU, has around 96 billion transistors.

* Neurons: The number of neurons in the human brain is estimated to be in the range of 86 billion.

Therefore, a quadrillion transistors is significantly larger than the number of neurons in a human brain.

While it's exciting to think about the potential of technology reaching the complexity of the human brain, we're still quite a ways off. However, the field of neuroscience is rapidly advancing, and new discoveries are constantly being made about the intricate workings of the human brain.