One of those experts is right here. I am a physicist who understands the science behind the so called "impossible events" on 9/11. For every "expert" you cite, there are hundreds of thousands of engineers and scientists just like me. Try a few of these on for size:
Purdue University structural dynamics modeling of aircraft impacts
http://www.cs.purdue.edu/homes/cmh/simulationMassachusetts Institute of Technology site about the WTC by professors and researchers
http://web.mit.edu/civenv/wtcExploration of 9/11 theories by aerospace engineers
http://www.aerospaceweb.org/question/conspiracy/q0265.shtmlhttp://www.aerospaceweb.org/question/conspiracy/q0290.shtmlhttp://www.aerospaceweb.org/question/conspiracy/q0274.shtmlhttp://www.aerospaceweb.org/question/history/q0311.shtmlDiscussion of the WTC collapse by retired fire chiefs
http://vincentdunn.com/wtc.htmlhttp://www.icivilengineer.com/News/WTC/Fire.htmlPBS NOVA episode describing the science of the WTC collapse
http://www.pbs.org/wgbh/nova/wtcAnimations matching the video and photo evidence from the Pentagon
http://www.mikejwilson.com/911University of Sydney Department of Civil Engineering discussion of the WTC collapse
http://www.civil.usyd.edu.au/wtc.shtmlJournal of Debunking 9/11 theories featuring peer reviewed articles
http://www.jod911.comCivil engineers explain WTC collapse
http://www.architectureweek.com/2002/0529/news_3-1.htmlHere's a list of other journal articles and technical reports on the WTC collapse:
Simulation for the collapse of WTC after aeroplane impact - Lu XZ., Yang N., Jiang JJ. Structure Engineer, 66(sup.). 2003, 18-22
Bazant, Z.P., & Zhou, Y. "Addendum to 'Why Did the World Trade Center Collapse? - Simple Analysis" Journal of Engineering Mechanics v. 128, no. 3, (2002): 369-370.
Brannigan, F.L. "WTC: Lightweight Steel and High-Rise Buildings", Fire Engineering v.155, no. 4, (2002): 145-150.
Clifton, Charles G. Elaboration on Aspects of the Postulated Collapse of the World Trade Centre Twin Towers, HERA: Innovation in Metals. 2001. 13 December 2001.
http://www.hera.org.nz/PDF%20Files/Elaboration%20on%20WTC%20Paper.PDF"Construction and Collapse Factors," Fire Engineering v.155, no. 10, (2002): 106-108.
Corbett, G.P. "Learning and Applying the Lessons of the WTC Disaster," Fire Engineering v.155, no. 10, (2002.): 133-135.
"Dissecting the Collapses," Civil Engineering ASCE v. 72, no. 5, (2002): 36-46.
Eagar, T.W., & Musso, C. "Why Did the World Trade Center Collapse? Science, Engineering, and Speculation," JOM v. 53, no. 12, (2001): 8-12.
Federal Emergency Management Agency, Therese McAllister, report editor. World Trade Center Building Performance Study: Data Collection, Preliminary Observations, and Recommendations
http://www.fema.gov/library/wtcstudy.shtmGabrielson, T.B., Poese, M.E., & Atchley, A.A. "Acoustic and Vibration Background Noise in the Collapsed Structure of the World Trade Center," The Journal of Acoustical Society of America v. 113, no. 1, (2003): 45-48.
Glover, N.J. "Collapse Lessons," Fire Engineering v. 155, no. 10, (2002): 97-103.
Marechaux, T.G. "TMS Hot Topic Symposium Examines WTC Collapse and Building Engineering," JOM, v. 54, no. 4, (2002): 13-17.
Monahan, B. "World Trade Center Collapse-Civil Engineering Considerations," Practice Periodical on Structural Design and Construction v. 7, no. 3, (2002): 134-135.
Newland, D.E., & Cebon, D. "Could the World Trade Center Have Been Modified to Prevent Its Collapse?" Journal of Engineering Mechanics v. 128, no. 7, (2002) 795-800.
National Instititue of Stamdards and Technology: Congressional and Legislative Affairs. "Learning from 9/11: Understanding the Collapse of the World Trade Center," Statement of Dr. Arden L. Bement, Jr., before Committee of Science House of Representatives, United States Congress on March 6, 2002.
http://www.nist.gov/testimony/2002/abwtc.htmlPinsker, Lisa, M. "Applying Geology at the World Trade Center Site," Geotimes v. 46, no. 11, (2001).
http://www.agiweb.org/geotimes/nov01/NNwtc.htmlCivil engineers, mechanical engineers, physicists, aerospace engineers, material scientists, electrical engineers, engineering mechanics, geologists, computer scientists, fire experts, acoustics engineers -- they all agree with the official explanation of the 9/11 attack. What proof could you possibly offer to make me believe you instead of them?